# Mailster Knowledge Base > --- ## Posts - [Security Settings](https://kb.mailster.co/security-settings/): The Security Settings in Mailster allow you to safeguard your campaigns and signups by adding various layers of protection. Below... - [Do Not Track (DNT)](https://kb.mailster.co/do-not-track-dnt/): The Do Not Track (DNT) mechanism is a privacy feature that allows internet users to indicate to websites and online... - [Mail App Unsubscribe](https://kb.mailster.co/mail-app-unsubscribe/): Whenever you send a newsletter campaign with Mailster, it will contain a List Unsubscribe Header. This is a mandatory header... - [Capablities in Mailster](https://kb.mailster.co/capablities-in-mailster/): Mailster offers a huge set of capabilities you can use to limit the access to your WordPress users. This is... - [How to change ownership of a license?](https://kb.mailster.co/how-to-change-ownership-of-a-license/): From Your WordPress Dashboard You can change your license from the WordPress dashboard. Once you enter the new email address,... - [Email Automation Trigger: Tag removed](https://kb.mailster.co/email-automation-trigger-tag-removed/): This is post 11 of 11 in the series “Trigger” Email Automation Trigger: Specific date Email Automation Trigger: Anniversary Email... - [Email Automation Trigger: Subscriber removed to a list ](https://kb.mailster.co/email-automation-trigger-subscriber-removed-to-a-list/): This is post 10 of 11 in the series “Trigger” Email Automation Trigger: Specific date Email Automation Trigger: Anniversary Email... - [Email Automation Trigger: Subscriber added to a list](https://kb.mailster.co/email-automation-trigger-subscriber-added-to-a-list/): This is post 9 of 11 in the series “Trigger” Email Automation Trigger: Specific date Email Automation Trigger: Anniversary Email... - [Email Automation Trigger: Tag added](https://kb.mailster.co/email-automation-trigger-tag-added/): This is post 3 of 11 in the series “Trigger” Email Automation Trigger: Specific date Email Automation Trigger: Anniversary Email... - [Email Automation Trigger: Field updated](https://kb.mailster.co/email-automation-trigger-field-updated/): This is post 4 of 11 in the series “Trigger” Email Automation Trigger: Specific date Email Automation Trigger: Anniversary Email... - [Email Automation Trigger: Form Conversion](https://kb.mailster.co/email-automation-trigger-form-conversion/): This is post 5 of 11 in the series “Trigger” Email Automation Trigger: Specific date Email Automation Trigger: Anniversary Email... - [Email Automation Trigger: Click a link](https://kb.mailster.co/email-automation-trigger-click-a-link/): This is post 6 of 11 in the series “Trigger” Email Automation Trigger: Specific date Email Automation Trigger: Anniversary Email... - [Email Automation Trigger: Visits a page](https://kb.mailster.co/email-automation-trigger-visits-a-page/): This is post 7 of 11 in the series “Trigger” Email Automation Trigger: Specific date Email Automation Trigger: Anniversary Email... - [Email Automation Trigger: Custom Hook](https://kb.mailster.co/email-automation-trigger-custom-hook/): This is post 8 of 11 in the series “Trigger” Email Automation Trigger: Specific date Email Automation Trigger: Anniversary Email... - [Email Automation Trigger: Anniversary](https://kb.mailster.co/email-automation-trigger-anniversary/): This is post 2 of 11 in the series “Trigger” Email Automation Trigger: Specific date Email Automation Trigger: Anniversary Email... - [Email Automation Trigger: Specific date](https://kb.mailster.co/email-automation-trigger-specific-date/): This is post 1 of 11 in the series “Trigger” Email Automation Trigger: Specific date Email Automation Trigger: Anniversary Email... - [Upgrading Your License](https://kb.mailster.co/upgrading-your-license/): With Mailster you always have the option to switch to a different plan or upgrade your license to more sites... - [Missing or wrong Translations](https://kb.mailster.co/missing-or-wrong-translations/): Mailster is available in over 20 languages and we do our best to keep these languages up to date. Since... - [Inspect the Queue of your Workflow Step](https://kb.mailster.co/inspect-the-queue-of-your-workflow-step/): Usually, steps are processed in a single process but some steps need to delay this. This is obvious for steps... - [Email Automation: Notification](https://kb.mailster.co/email-automation-notification/): This is post 7 of 7 in the series “Automations” Email Automation in WordPress Email Automation: Triggers Email Automation: Actions... - [Email Automation: Jumper](https://kb.mailster.co/email-automation-jumper/): This is post 6 of 7 in the series “Automations” Email Automation in WordPress Email Automation: Triggers Email Automation: Actions... - [How to manage your licenses for Mailster](https://kb.mailster.co/how-to-manage-your-licenses-for-mailster/): The licensing system of Freemius operates on license keys allocated to each product acquired via the platform. When a license... - [Email Health Check](https://kb.mailster.co/email-health-check/): Gmail and Yahoo announced updates to its sender authentication policies, effective February 1, 2024. These changes aim to reduce spam... - [Using Custom Modules](https://kb.mailster.co/custom-modules/): Modules are segmented sections within your newsletter campaign. Every template is equipped with a range of modules that you can... - [Send your Newsletters via MailJet](https://kb.mailster.co/send-your-newsletters-via-mailjet/): Mailjet is a highly efficient email marketing tool that seamlessly integrates with Mailster. Notably, it offers exceptional support for bounce... - [Convert your Legacy Forms](https://kb.mailster.co/convert-your-legacy-forms/): Mailster 4. 0 introduces a new way to create forms. The new builder is based on the WordPress block editor... - [Email Automation: Email](https://kb.mailster.co/email-automation-email/): This is post 5 of 7 in the series “Automations” Email Automation in WordPress Email Automation: Triggers Email Automation: Actions... - [Email Automation: Delay](https://kb.mailster.co/email-automation-delay/): This is post 4 of 7 in the series “Automations” Email Automation in WordPress Email Automation: Triggers Email Automation: Actions... - [Email Automation: Actions](https://kb.mailster.co/email-automation-actions/): This is post 3 of 7 in the series “Automations” Email Automation in WordPress Email Automation: Triggers Email Automation: Actions... - [Email Automation: Triggers](https://kb.mailster.co/email-automation-triggers/): This is post 2 of 7 in the series “Automations” Email Automation in WordPress Email Automation: Triggers Email Automation: Actions... - [Email Automation in WordPress](https://kb.mailster.co/email-automation-in-wordpress/): This is post 1 of 7 in the series “Automations” Email Automation in WordPress Email Automation: Triggers Email Automation: Actions... - [Kitchen Sink](https://kb.mailster.co/kitchen-sink/): This article is for testing only. Thanks for your attention! The goal of this new editor is to make adding... - [How can I setup the newsletter homepage?](https://kb.mailster.co/how-can-i-setup-the-newsletter-homepage/): To ensure the smooth functioning of the subscription and unsubscription process, it is imperative to have a static page as... - [Convert your Newsletter Homepage](https://kb.mailster.co/convert-your-newsletter-homepage/): It is high time to upgrade to the new block forms if you are still using shortcodes on your old... - [Update Billing Details and Access Invoices](https://kb.mailster.co/update-billing-details-and-access-invoices/): If you need to update or add billing information for your entire Freemius account, it’s super easy to do so.... - [Change the length of the excerpt](https://kb.mailster.co/change-the-length-of-the-excerpt/): WordPress has a filter to change the length of the excerpt on your website. The excerpt_length filter helps you to... - [Why does my Legacy license expire?](https://kb.mailster.co/why-does-my-legacy-license-expire/): If you bought a license from Envato after the 1st of October 2022 you see an “Expires in... ” badge... - [How can I upgrade my license?](https://kb.mailster.co/how-can-i-upgrade-my-license/): You can upgrade your license directly from the plugin if you go to Newsletter => Account and click on the... - [Logging Outgoing Mails in Mailster](https://kb.mailster.co/logging-outgoing-mails-in-mailster/): With Mailster you can log outgoing emails in WordPress. Head over to Newsletter => Settings to find the “Logging” tab. - [Licensing Information](https://kb.mailster.co/licensing-information/): You have two ways to purchase Mailster: From mailster. co If you bought Mailster from the official website your licenses... - [Static Map Service](https://kb.mailster.co/static-map-service/): Mailster uses static image maps of various places like the subscriber’s detail page or the new subscriber notification. Head over... - [Block Forms](https://kb.mailster.co/block-forms/): If you click on the Block Forms menu entry you can find an overview of your current existing block forms.... - [Templates](https://kb.mailster.co/templates/): Templates are an essential part of Mailster. They define the look and feel of your campaigns. You can find all... - [Create Custom Templates](https://kb.mailster.co/create-custom-templates/): General Idea Structure A Mailster Template includes at least two Template Files: You can add additional Template Files in this... - [Delete Subscribers](https://kb.mailster.co/delete-subscribers/): Similar to exporting subscribers you can also delete subscribers. While you can delete subscribers from the Subscribers Overview page it’s... - [Finished Campaigns](https://kb.mailster.co/finished-campaigns/): Mailster provides detailed statistics about your campaigns and the subscribers who opened them. - [Subscribers Overview](https://kb.mailster.co/subscribers-overview/): Mailster allows managing all your subscribers inside your WordPress installation. They are stored in tables in the same database as... - [Campaign Overview](https://kb.mailster.co/campaign-overview/): The Campaign Overview page gives you a quick overview of all your campaigns. It’s similar to the post overview page... - [Frontpage](https://kb.mailster.co/frontpage/): The Frontpage displays your newsletter as a “web version”. It provides a top bar with a link to your homepage,... - [The Campaign Editor](https://kb.mailster.co/the-campaign-editor/): The campaign editor is the heart of Mailster and allows you to quickly build your campaigns. You can also create... - [Campaign Precheck](https://kb.mailster.co/precheck/): With Mailster you can quickly check your campaigns for deliverability with our precheck feature. - [I have problems with sending campaigns.](https://kb.mailster.co/i-have-problems-with-sending-campaigns/): If you encounter problems while sending your campaigns it’s most likely a problem with your cron setup. - [How to read metrics on the campaign overview page.](https://kb.mailster.co/how-to-read-metrics-on-the-campaign-overview-page/): On the Campaign Overview page, you get an overview of how your campaigns perform. - [How do I import my subscribers?](https://kb.mailster.co/how-do-i-import-my-subscribers/): Before you start sending your first email campaign you may like to import your existing subscribers, into Mailster. You can... - [Migrating your license to Freemius](https://kb.mailster.co/migrating-your-license-to-freemius/): If you bought Mailster on the Envato marketplace you have to migrate your Envato License (purchase code) to a Freemius... - [Use Advanced Custom Fields in your Newsletter Campaigns](https://kb.mailster.co/use-advanced-custom-fields-in-your-newsletter-campaigns/): Advanced Custom Fields is a popular plugin that can help you add extra content fields to your WordPress edit screens.... - [Trigger Custom Javascript on Form Submission](https://kb.mailster.co/trigger-custom-javascript-on-form-submission/): With Mailster Block Forms you can run custom JavaScript on certain actions. This helps when you like to track form... - [Warm up your email delivery method.](https://kb.mailster.co/warm-up-your-email-delivery-method/): If you just started with email marketing or switched your delivery provider or even our domain or IP address it’s... - [Send your emails as fast as possible.](https://kb.mailster.co/send-your-emails-as-fast-as-possible/): Mailster sends you emails in batches. While this is a technical limitation it also prevents sending too many emails at... - [Prevent spam filters from automatically opening and clicking through links in your campaigns](https://kb.mailster.co/prevent-spam-filters-from-automatically-opening-and-clicking-through-links-in-your-campaigns/): Some email spam filters can open and click through the links in your emails to check for malicious content. This... - [How many mails can I send at once?](https://kb.mailster.co/how-many-mails-can-i-send-at-once/): If you send marketing emails you often like to send them as fast as possible. While this is great in... - [Manually replacing a Mailster version](https://kb.mailster.co/manually-replacing-a-mailster-version/): Mailster has some security mechanisms built in to prevent you from being infected with a malicious version. If you ever... - [Mailster Customization Services](https://kb.mailster.co/mailster-customization-services/): Need some custom work done for your website? We have an amazing partner who can help! - [Sending post-purchase coupon codes to WooCommerce customers.](https://kb.mailster.co/sending-post-purchase-coupon-codes-to-woocommerce-customers/): In many cases, you would like to offer a discount for your customers once they buy a certain product. With... - [Send your newsletters via Gmail](https://kb.mailster.co/send-your-newsletters-via-gmail/): Gmail by Google is a great email delivery provider and you can use it to send all your newsletter campaigns... - [The Mailster Cookie](https://kb.mailster.co/the-mailster-cookie/): Whenever a subscriber clicks a link in a campaign Mailster sets a cookie on your domain to identify the user... - [Grace Period](https://kb.mailster.co/grace-period/): In Mailster you can have multiple autoresponders to trigger your campaigns automatically. Some of them have a date or timestamp... - [List Based and Global Subscriptions](https://kb.mailster.co/list-based-and-global-subscriptions/): Mailster can handle subscriptions in two different ways. - [Encode Tags for Links](https://kb.mailster.co/encode-tags-in-links/): If you are using Tags in Mailster you may like to use them in your links as well. Since links... - [RSS Email Campaigns](https://kb.mailster.co/rss-email-campaigns/): Mailster can use RSS Feeds to automatically create your recurring autoresponders. This method is useful if you like to use... - [Dynamic Custom Post Types](https://kb.mailster.co/dynamic-custom-post-types/): Mailster has a powerful tag engine built in where you can dynamically populate your newsletter campaigns. Dynamic Custom Post Types... - [Random Dynamic Posts](https://kb.mailster.co/random-dynamic-posts/): If you are familiar with dynamic posts in Mailster you will quickly understand the usage of random posts. - [WordPress displays a 404 error after updating the campaign](https://kb.mailster.co/wordpress-displays-a-404-error-after-updating-the-campaign/): If you ever experienced this problem that your WordPress site redirects you to https://yoursite. com/wp-admin/post. php it may be caused... - [Use Unsplash images in Email Campaigns](https://kb.mailster.co/unsplash/): With Mailster you can use over 1. 000. 000 photos for free directly in the editor. All photos are released... - [What information will be tracked by opting into usage tracking?](https://kb.mailster.co/usage-tracking/): We no longer track this info since Mailster 4. 0. If you still use an older version you should consider... - [Why do my emails end up in the Gmail Promotions Tab?](https://kb.mailster.co/why-do-my-emails-end-up-in-the-gmail-promotions-tab/): When you send your Mailster campaigns Google will scan the incoming message and – depending on the kind of content... - [Permalink Structure](https://kb.mailster.co/permalink-structure/): Mailster uses custom rewrite rules to process certain actions and to route users on the newsletter homepage. If you have... - [I have problems registering the plugin](https://kb.mailster.co/i-have-problems-registering-the-plugin/): Update 15th March 2023This Article is no longer valid. If you install Mailster you have to validate your purchase code.... - [Working with animated GIFs in Mailster](https://kb.mailster.co/working-with-animated-gifs-in-mailster/): Animated GIFs can bring some life to your email marketing campaigns. Since Mailster uses WordPress native methods to resize images,... - [Handling Bounces with AmazonSNS](https://kb.mailster.co/handling-bounces-with-amazonsns/): If you are sending your Campaigns with Amazon’s Simple Email Service you can use the regular Bounce option that comes... - [How many subscribers can Mailster handle?](https://kb.mailster.co/how-many-subscribers-can-mailster-handle/): Technically there are no limits in Mailster. You can have unlimited subscribers, lists, forms, and campaigns. There are some server-related... - [Send your Newsletters via SendGrid](https://kb.mailster.co/send-your-newsletters-via-sendgrid/): SendGrid is a powerful sending provider that works with Mailster. - [How to migrate Mailster to a new site](https://kb.mailster.co/how-to-migrate-mailster-to-a-new-site/): Depending on your license you can use Mailster on one site or more. If you like to use your single-use... - [User Ratings](https://kb.mailster.co/user-ratings/): User or Subscriber ratings are a quick way to see the most engaging subscribers in Mailster. - [Adding Content to your Forms](https://kb.mailster.co/adding-content-to-your-forms/): This article is used for Legacy Forms and no longer works on Block Forms! Mailster forms can be defined and... - [Disabling the Inline Editor](https://kb.mailster.co/disabling-the-inline-editor/): This article is no longer relevant to the latest version of Mailster. The Inline Editor in Mailster was made to... - [Mailster Subscriber Query](https://kb.mailster.co/subscriber-query/): Mailster offers an easy way to get your subscribers via segmentation. If you like to get more out of this... - [Using Multi language Newsletter with WPML](https://kb.mailster.co/using-multi-language-newsletter-with-wpml/): With Mailster you can send multi-language campaigns if you use the WPML plugin for your site. - [Security Nonce is invalid](https://kb.mailster.co/security-nonce-is-invalid/): Mailster form uses WordPress Nonces to prevent invalid form submissions. These nonces can expire in some cases which causes an... - [Mailster and GDPR](https://kb.mailster.co/gdpr/): The General Data Protection Regulation (GDPR) is enforceable as law in all EU member states on May 25, 2018. While Mailster is in... - [Mail Headers in Mailster](https://kb.mailster.co/mail-headers-in-mailster/): Each mail sent with Mailster is technically a multi-part message in MIME format. It contains three sections: - [Adding Posts to your Campaign](https://kb.mailster.co/adding-posts-to-your-campaign/): One of the core features of Mailster is the deep integration with WordPress. To get your posts and articles into... - [WordPress Users in Mailster](https://kb.mailster.co/wordpress-users-in-mailster/): Mailster has a dedicated list of your subscribers so your WordPress users are by default not connected to your Mailster... - [Send your Newsletters via Mailgun](https://kb.mailster.co/send-your-newsletters-via-mailgun/): Mailgun is a developer-friendly email provider and if you use Mailster you can use it to send your campaigns. - [Validating Custom Fields](https://kb.mailster.co/validating-custom-fields/): Mailster gives you the option to define custom fields where you can store additional information of your subscribers. Sometimes you... - [Send your Newsletters via SparkPost](https://kb.mailster.co/send-your-newsletters-via-sparkpost/): With SparkPost you get a solid delivery provider. There’s some setup required before you can use this service though. SparkPost... - [Using WooCommerce in your Newsletter Campaigns](https://kb.mailster.co/using-woocommerce-in-your-newsletter-campaigns/): If you’re running a WooCommerce Shop and like to send your latest products to your audience you can use Mailster... - [Get the current subscriber](https://kb.mailster.co/get-the-current-subscriber/): Sometimes you need the current subscriber on your website. Mailster has some built-in methods to get this information. - [Where are the module screenshots?](https://kb.mailster.co/where-are-the-module-screenshots/): Mailster tries to create screenshots of your template files on the fly on one of our servers. This should happen... - [Why does the {post_image} tag not work?](https://kb.mailster.co/why-does-the-post_image-tag-not-work/): If you know Tags in Mailster you may know the {post_image:X} tag. It uses the feature image of the chosen post... - [How to redirect after form submission?](https://kb.mailster.co/how-to-redirect-after-form-submission/): By default Mailster forms are ajax based and you get a nice confirmation message after your users have submitted the... - [Keep certain tags in your campaigns](https://kb.mailster.co/keep-certain-tags-in-your-campaigns/): By default, Mailster will remove all unused tags in the final version of your campaign. To prevent that you can whitelist... - [Using Mailster Forms (Deprectated)](https://kb.mailster.co/using-mailster-forms/): Mailster includes sign-up forms you can use in many different ways. If you are running other websites- whether they are... - [Saving new Template Files](https://kb.mailster.co/saving-new-template-files/): Mailster Templates give you a great start to get your campaigns going. If the provided modules don’t fit your needs or... - [Adding a Terms of Service checkbox to your forms](https://kb.mailster.co/adding-a-terms-of-service-checkbox-to-your-forms/): This article is no longer valid if you use Block Forms. Please check out the guide here. Many countries have... - [Moving subscribers to different lists](https://kb.mailster.co/moving-subscribers-to-different-lists/): It’s easy to assign subscribers to the list with the UI of Mailster. Just select the subscribers you like to... - [Changing the static Auto Tag Output](https://kb.mailster.co/changing-the-static-auto-tag-output/): Next to dynamic content, you can also find your static content in the auto feature of Mailster. To change the... - [Adding custom code to your website](https://kb.mailster.co/adding-custom-code-to-your-website/): Sometimes it’s required to add custom code that extends the functionality of your website. In WordPress, you have two ways... - [Adding a Date Picker to your forms](https://kb.mailster.co/adding-a-date-picker-to-your-forms/): This method is for legacy forms only! If you use block forms you have built-in date pickers already. Custom Fields... - [How to remove Visual Composer shortcodes in campaigns](https://kb.mailster.co/how-to-remove-visual-composer-shortcodes-in-campaigns/): If you are using Visual Composer to create your content in WordPress you may find the used shortcodes in your campaign. - [Mails are send but not delivered](https://kb.mailster.co/mails-are-send-but-not-delivered/): When Mailster sends an email via your chosen delivery method it always relies on the response of your sending server.... - [Setup Automatic Bounce Handling](https://kb.mailster.co/setup-automatic-bounce-handling/): Mailster can automatically process bounces which requires some setup. All emails sent before this setup do not get processed. - [Mailster and WooCommerce](https://kb.mailster.co/mailster-and-woocommerce/): If you are running your own shop with WooCommerce and would like to get your customers as subscribers to your... - [Access to admin-ajax.php is blocked](https://kb.mailster.co/access-to-admin-ajax-php-is-blocked/): The admin-ajax. php file is used by Mailster to perform various actions in your backend. If this file is blocked or not accessible it’s... - [Changing text snippets](https://kb.mailster.co/changing-text-snippets/): Mailster has some internal texts which are used at various locations. By default, you can change them on the Text... - [Add custom dynamic tags to your newsletter](https://kb.mailster.co/add-custom-dynamic-tags-to-your-newsletter/): Sometimes you need to add some custom dynamic content to your newsletters. You may use it for coupon codes, custom... - [Sending Plain Text Emails](https://kb.mailster.co/sending-plain-text-emails/): For tracking reasons, you can only send HTML emails in Mailster. If you like to send plain text messages there... - [How to add a Google Maps API Key](https://kb.mailster.co/how-to-add-a-google-maps-api-key/): Mailster uses Google Maps to display the location of your subscribers. To display them you have to set up a Google... - [Add Subscribers](https://kb.mailster.co/add-subscribers/): You can quickly add subscribers in Mailster with some line of code. - [Mailster for Developers](https://kb.mailster.co/mailster-for-developers/): You can check for Mailster with To run your code you should wrap it in the Mailster Closure The Mailster... - [Tags in Mailster](https://kb.mailster.co/tags-in-mailster/): Tags are placeholders in your campaigns and are an essential part of Mailster. They always get replaced with their desired content... - [Your First Campaign](https://kb.mailster.co/your-first-campaign/): If you have successfully activated the plugin you can create your first campaign like a regular post. Click on “New... - [How to install Mailster](https://kb.mailster.co/how-to-install-mailster/): You can install Mailster by going to your Plugins page and clicking on the “Add New” button at the top... - [Updating MyMail to Mailster](https://kb.mailster.co/updating-mymail-to-mailster/): Providing our customers with the best email marketing software possible to increase their interaction and grow their business has always... - [Working with action hook auto responders](https://kb.mailster.co/working-with-action-hook-auto-responders/): This is post 5 of 5 in the series “Auto responder” Working with subscriber-based autoresponders Working with action-based autoresponders Working... - [What is a Cron Lock?](https://kb.mailster.co/what-is-a-cron-lock/): When Mailster sends your campaigns it wants to make sure no duplicate emails reach your customers. For this reason, a cron... - [How to alter the buttons in the text editor?](https://kb.mailster.co/how-to-alter-the-buttons-in-the-text-editor/): You can change the text in your email campaigns with a rich text editor. The reason you may miss some buttons in the... - [Post Thumbnail, Oembed, and Open Graph](https://kb.mailster.co/post-thumbnail-oembed-and-open-graph/): Images say more than a thousand words. You may know this when adding a Feature Image to your posts but... - [New Subscriber Notification Options](https://kb.mailster.co/new-subscriber-notification-options/): For users who have many new subscribers each day it quickly gets annoying to receive a notification for each new... - [Send your Newsletters via Amazon's SES](https://kb.mailster.co/send-your-newsletters-via-amazons-ses/): It’s really recommended to send your newsletters via a dedicated email service provider. One of the big players in this... - [Changing the dynamic Auto Tag Output](https://kb.mailster.co/changing-the-dynamic-auto-tag-output/): If you regularly include dynamic posts in your campaigns you are familiar with the auto feature of Mailster. To change the... - [SMTP Error: data not accepted](https://kb.mailster.co/smtp-error-data-not-accepted/): This error occurs if you’re sending via SMTP. The SMTP server rejects the mail for several reasons: Your server doesn’t... - [Why does support expire?](https://kb.mailster.co/why-does-support-expire/): In September 2015 Envato introduced a new way support gets handled. All items purchased after the 1st of September 2015 are... - [Translations in Mailster](https://kb.mailster.co/translations-in-mailster/): Mailster is used around the world and while many installations are running with an English localization even more don’t.   We... - [Creating a series in Mailster](https://kb.mailster.co/creating-a-series-in-mailster/): This is post 4 of 5 in the series “Auto responder” Working with subscriber-based autoresponders Working with action-based autoresponders Working... - [Troubleshooting WordPress in 60 Seconds](https://kb.mailster.co/troubleshooting-wordpress-in-60-seconds/): Mailster has been tested thoroughly and follows the WordPress Coding Standards. This means it should work with every plugin or... - [Why is my WordPress version no longer supported?](https://kb.mailster.co/why-is-my-wordpress-version-no-longer-supported/): WordPress gets constantly updated and every update brings new features and fixes bugs. - [Ignore certain Posts in your Campaigns](https://kb.mailster.co/ignore-certain-posts-in-your-campaigns/): With Mailster you can send your latest posts automatically to your subscribers but sometimes you would like to exclude certain... - [Understanding subscriber based timezone sending](https://kb.mailster.co/understanding-subscriber-based-timezone-sending/): If your subscribers are located at different timezone and you still like to reach them at the best time of the... - [Setup your Birthday campaign with autoresponders](https://kb.mailster.co/setup-your-birthday-campaign-with-autoresponders/): With Mailster you can send birthday greetings to your subscribers.  All you need is the birthday as a custom field. - [Build an Archive of your latest Newsletters](https://kb.mailster.co/build-an-archive-of-your-latest-newsletters/): Displaying the latest campaigns in chronological order can be achieved in an easy way. Just enable the option on the... - [Add a list of your latest post in your campaign](https://kb.mailster.co/add-a-list-of-your-latest-post-in-your-campaign/): People are always interested in new stuff. If not allow them to visit your blog by offering links to older... - [Segmentation in Mailster](https://kb.mailster.co/segmentation-in-mailster/): With segmentation, you can easily narrow down your target audience, allowing for more precise targeting. This enables you to send... - [Track your clicks with Google Analytics](https://kb.mailster.co/track-your-clicks-with-google-analytics/): With Mailster you get many details from your subscribers: clicks opens, unsubscriptions, and bounces. If you watch your website’s visitors... - [Get a notification on new subscribers](https://kb.mailster.co/get-a-notification-on-new-subscribers/): Getting notifications for new subscribers is simple by enabling the option on the Subscribers tab in settings. - [Use fullname instead of first- and lastname](https://kb.mailster.co/use-fullname-instead-of-first-and-lastname/): When you write personalized newsletters you are probably familiar with the {firstname} and {lastname} tag. If you use both you should replace them with {fullname} - [What is DKIM (DomainKeys Identified Mail)?](https://kb.mailster.co/what-is-dkim-domainkeys-identified-mail/): DKIM stands for DomainKeys Identified Mail and is a method for associating a domain name to an email message (Wikipedia)... - [Working with time based auto responders](https://kb.mailster.co/working-with-time-based-auto-responders/): This is post 3 of 5 in the series “Auto responder” Working with subscriber-based autoresponders Working with action-based autoresponders Working... - [Working with action-based autoresponders](https://kb.mailster.co/working-with-action-based-autoresponders/): This is post 2 of 5 in the series “Auto responder” Working with subscriber-based autoresponders Working with action-based autoresponders Working... - [Working with subscriber-based autoresponders](https://kb.mailster.co/working-with-subscriber-based-autoresponders/): This is post 1 of 5 in the series “Auto responder” Working with subscriber-based autoresponders Working with action-based autoresponders Working... - [How to add salutation to your subscribers?](https://kb.mailster.co/how-to-add-salutation-to-your-subscribers/): Sometimes it’s needed to welcome your subscribers with friendlier words such as “Hello” or “Hi”. In some countries, it’s also... - [How can subscribers update their subscription?](https://kb.mailster.co/how-can-subscribers-update-their-subscription/): If you would like to give your subscribers the opportunity to update their subscription data you can simply add a... - [Why does tracking not work?](https://kb.mailster.co/why-does-tracking-not-work/): When you send out your campaigns but your statistics claims none of your subscribers opened or clicked your campaign, follow... - [How to handle bounces with SendGrid?](https://kb.mailster.co/how-to-handle-bounces-with-sendgrid/): If you are using SendGrid with Mailster you can also automatically progress bounces. You only need On the delivery tab, you... - [How to solve database errors?](https://kb.mailster.co/how-to-solve-database-errors/): In some cases, Mailster is not able to create certain tables in your database. You may end up finding an error... - [How does tracking in Mailster work?](https://kb.mailster.co/how-does-tracking-in-mailster-work/): With Mailster you can track opens, clicks, unsubscribes, and bounces. - [Choosing your Delivery Method](https://kb.mailster.co/choosing-your-delivery-method/): Mailster offers by default two delivery methods: Additionally, you can add more methods with plugins. Simple This is the default... - [How can I increase the sending speed?](https://kb.mailster.co/how-can-i-increase-the-sending-speed/): Depending on your delivery method Mailster needs some time to send your campaigns. - [Why do the links in my emails not work?](https://kb.mailster.co/why-do-the-links-in-my-emails-not-work/): In some cases, you were not able to reach the content of one of your links in a Mailster email. - [How can I use short codes in Mailster campaigns?](https://kb.mailster.co/how-can-i-use-short-codes-in-mailster-campaigns/): Shortcodes are disabled by default in Mailster and will be removed from your campaign. The reason is that short codes can inject almost any HTML... - [SMTP Error: Could not connect to SMTP host.](https://kb.mailster.co/smtp-error-could-not-connect-to-smtp-host/): Whenever you get a connection error when sending via SMTP like The most common reason for this problem is that... - [How can I use Mailster with the wp_mail function?](https://kb.mailster.co/how-can-i-use-mailster-with-the-wp_mail-function/): Many contact forms or membership plugins use the wp_mail method. With Mailster you can hijack the function and use the Mailster... - [How can I manually upload Mailster templates?](https://kb.mailster.co/how-can-i-manually-upload-mailster-templates/): If you don’t like or are not able to upload the templates via the Templates section you can upload the... - [How do I know if my cron is working correctly?](https://kb.mailster.co/how-do-i-know-if-my-cron-is-working-correctly/): Mailster requires a cron to send its campaign. If you know how to set up a cron you have to... - [Why do some of my subscribers get a status of "error"?](https://kb.mailster.co/why-do-some-of-my-subscribers-get-a-status-of-error/): If you’re sending your campaigns you’ll get sometimes subscribers marked as error - [How colors work with the Mailster Editor?](https://kb.mailster.co/how-colors-work-with-the-mailster-editor/): Colors in the Mailster Editor depend on the currently used template. Mailster scans the raw HTML and groups the same... - [Why does the unsubscribe link not work?](https://kb.mailster.co/why-does-the-unsubscribe-link-not-work/): In some rare cases, the generated unsubscribe link in your campaigns ends in a “404 – Not Found” page. The... - [How can I send newsletters via GoDaddy?](https://kb.mailster.co/how-can-i-send-newsletters-via-godaddy/): Although it’s not recommended to use GoDaddy’s own email servers you can do it but have to follow some rules:... - [How can I add a captcha to the sign up form?](https://kb.mailster.co/how-can-i-add-a-captcha-to-the-sign-up-form/): Currently are two free plugins available: You can find them on the WordPress Plugin repo. - [How can I setup the newsletter homepage (legacy)?](https://kb.mailster.co/how-can-i-setup-the-newsletter-homepage-legacy/): There’s a newer version available of this article. The newsletter homepage is a static page that is required to make... - [SMTP Error: Could not authenticate](https://kb.mailster.co/smtp-error-could-not-authenticate/): In some cases your campaign pauses or you are even not able to send emails at all cause of this... - [Can I add attachments to my newsletter?](https://kb.mailster.co/can-i-add-attachments-to-my-newsletter/): You can add attachments to your campaigns by using the attachment meta box on the campaign edit screen. You can add any... - [Why I can't save templates or other files?](https://kb.mailster.co/why-i-cant-save-templates-or-other-files/): When you’re working with WordPress plugins like Mailster, a common frustration is encountering issues with saving templates or other files.... - [Why do I get this parse error?](https://kb.mailster.co/why-do-i-get-this-parse-error/): In some rare cases, Mailster shows this error after an Ajax request doesn’t respond to a valid JSON: This error... - [How can I open the browsers console?](https://kb.mailster.co/how-can-i-open-the-browsers-console/): The Browser Console contains important information on Errors. While most of the errors shown are JavaScript-related related some server-related information can... - [Why I'm not able to connect to bounce server?](https://kb.mailster.co/why-im-not-able-to-connect-to-bounce-server/): If you set up a bounce server you have to enter a port. Normally 110 or 995 for SSL connections... - [Why can't I use SMTP?](https://kb.mailster.co/why-cant-i-use-smtp/): SMTP (Simple Mail Transfer Protocol) uses different ports to send emails. Sometimes your provider blocks specific ports and you’re not... - [Mailster is not able to access the file system](https://kb.mailster.co/mailster-is-not-able-to-access-the-file-system/): On some server configurations, Mailster isn’t able to write on the file system. You have to change the file permission... - [How can I setup a cron job?](https://kb.mailster.co/how-can-i-setup-a-cron-job/): If you have problems with sending your campaigns you may not have set up your cron correctly. - [What are my sending limits?](https://kb.mailster.co/what-are-my-sending-limits/): You can define how many emails Mailster sends in a certain period so you can respect your provider’s limits. - [My provider doesn't allow sending bulk mails](https://kb.mailster.co/my-provider-doesnt-allow-sending-bulk-mails/): Your provider doesn’t allow you to send bulk mail or even block outgoing mail completely. You can always use a... - [How can I update to the latest version?](https://kb.mailster.co/how-can-i-update-to-the-latest-version/): The easiest way to update Mailster is like a regular WordPress plugin from the repo. Just visit the Updates page... - [How can I increase my memory limit?](https://kb.mailster.co/how-can-i-increase-my-memory-limit/): If you get a PHP error like “Allowed memory size of xxx bytes exhausted” you have to increase your memory... - [The latest cronjob hasn't been finished](https://kb.mailster.co/the-latest-cronjob-hasnt-been-finished/): Sometimes sending emails can take longer than expected. This can cause a server timeout and wrong statistics in some cases.... - [What is the CAN-SPAM act and do my newsletters have to comply?](https://kb.mailster.co/what-is-the-can-spam-act-and-do-my-newsletters-have-to-comply/): The CAN-SPAM Act of 2003 (15 U. S. C. 7701, et seq. , Public Law No. 108-187, was S. 877... - [How can I prevent that my campaigns went in spam folder?](https://kb.mailster.co/how-can-i-prevent-that-my-campaigns-went-in-spam-folder/): The best way to avoid Spam filters when sending email campaigns: Also, make sure you follow your local legal guidelines.... - [Mailster doesn't work with [third party plugin]](https://kb.mailster.co/mailster-doesnt-work-with-a-third-party-plugin/): We do our best to keep Mailster working best with the most common plugins by following the WordPress Coding Standards but... - [How can I customize the notification template?](https://kb.mailster.co/how-can-i-customize-the-notification-template/): Mailster uses the notification template file of your template to send certain emails. You can change this template with the... - [How do I export my subscribers?](https://kb.mailster.co/how-do-i-export-my-subscribers/): You can export your subscribers on the “Manage Subscribers” page. - [Why are my auto responders not getting send?](https://kb.mailster.co/why-are-my-auto-responders-not-getting-send/): To set up your custom autoresponder can take some time and even then you may have trouble getting things going.... - [Changelog](https://kb.mailster.co/changelog/): Version 4. 1. 10 2025-03-10 fixed: improve capabilities and permissions system updated Dependencies and Package Versions chore: update commit message... - [Why my campaigns do not get sent?](https://kb.mailster.co/why-my-campaigns-do-not-get-sent/): If you have created your campaign and it’s ready to get sent you probably see no progress and no mail... - [Why I get a "Could not execute:/usr/sbin/sendmail" error message?](https://kb.mailster.co/why-i-get-a-could-not-execute-usr-sbin-sendmail-error-message/): Sendmail is a mail transfer client which is used by many providers. - [Where's my purchase code?](https://kb.mailster.co/where-is-my-purchasecode/): If you bought the plugin via the Envato Marketplace you can find your license code (purchase code) in the download... --- # # Detailed Content ## Posts ### Security Settings - Published: 2025-03-24 - Modified: 2025-03-24 - URL: https://kb.mailster.co/security-settings/ - Categories: Settings - Tags: security The Security Settings in Mailster allow you to safeguard your campaigns and signups by adding various layers of protection. Below is an overview of the available options and how to configure them. General Checks General checks help validate and verify email addresses and domains before allowing them to sign up. Check MX Record: Verifies that the domain has an existing MX record, which is essential for delivering emails. If no MX record is found, it indicates that the domain has no configured mail server. Validate via SMTP: Connects to the SMTP server of the domain to confirm that the email address actually exists. This reduces the risk of using fake or invalid addresses. Honeypot: Adds an invisible input field to catch bots trying to fill out all fields during signup. IP Check: Prevents a signup from the same IP address if there is already a pending subscriber from that IP. This is useful for reducing spam and duplicate signups. Antiflood Sets a time limit to prevent repeated subscriptions from the same IP address within a specified period. If set to 10 seconds, users cannot subscribe multiple times from the same IP within 10 seconds. Auto Click Prevention This option adds an extra redirect when links in emails are clicked too quickly. Some automated email security systems might click on every link to test them, which could skew campaign metrics. Enabling this option helps reduce false clicks. Read more here. Disposable Email Provider Rejects email addresses from temporary or disposable email... --- ### Do Not Track (DNT) - Published: 2025-03-24 - Modified: 2025-03-24 - URL: https://kb.mailster.co/do-not-track-dnt/ - Categories: Tips - Tags: privacy The Do Not Track (DNT) mechanism is a privacy feature that allows internet users to indicate to websites and online services that they do not want their online activities to be tracked. DNT was designed to give users greater control over their personal information and browsing habits. (more... ) --- ### Mail App Unsubscribe - Published: 2025-03-24 - Modified: 2025-03-24 - URL: https://kb.mailster.co/mail-app-unsubscribe/ - Categories: Settings - Tags: deliverability Whenever you send a newsletter campaign with Mailster, it will contain a List Unsubscribe Header. This is a mandatory header for bulk mailers to make unsubscribe from your emails a standard process. You can modify the exact behavior in the settings. (more... ) --- ### Capablities in Mailster - Published: 2025-03-19 - Modified: 2025-03-24 - URL: https://kb.mailster.co/capablities-in-mailster/ - Categories: Settings Mailster offers a huge set of capabilities you can use to limit the access to your WordPress users. This is useful if you like to have one person create your campaigns but prevent them from actually sending them. (more... ) --- ### How to change ownership of a license? - Published: 2025-01-16 - Modified: 2025-03-19 - URL: https://kb.mailster.co/how-to-change-ownership-of-a-license/ - Categories: Troubleshoot - Tags: license From Your WordPress Dashboard You can change your license from the WordPress dashboard. Goto "Newsletter => "Account" in your WordPress Backend. Click on "Edit" next to the email address Enter the new owner's email address Once you enter the new email address, you will be asked if this is your, or your client's email address. Choose an option and continue with "Update" to move the license to a new owner. The previous owner will get a confirmation message to confirm the change of ownership. From your Mailster account At your account, you can handle the license management without access to the WordPress backend. Learn How to manage your licenses for Mailster. --- ### Email Automation Trigger: Tag removed - Published: 2025-01-11 - Modified: 2025-03-19 - URL: https://kb.mailster.co/email-automation-trigger-tag-removed/ - Categories: Automation - Tags: trigger - Post series: Trigger This trigger starts a workflow whenever a tag is removed from a subscriber. You can also run a workflow whenever a tag is added to a subscriber. (more... ) --- ### Email Automation Trigger: Subscriber removed to a list  - Published: 2025-01-11 - Modified: 2025-03-26 - URL: https://kb.mailster.co/email-automation-trigger-subscriber-removed-to-a-list/ - Categories: Automation - Tags: trigger - Post series: Trigger This trigger starts a workflow whenever a subscriber is removed from a list. You can also run a workflow whenever a subscriber gets added to a list. (more... ) --- ### Email Automation Trigger: Subscriber added to a list - Published: 2025-01-11 - Modified: 2025-03-26 - URL: https://kb.mailster.co/email-automation-trigger-subscriber-added-to-a-list/ - Categories: Automation - Tags: trigger - Post series: Trigger This trigger starts a workflow whenever a subscriber is added to a list. You can also run a workflow whenever a subscriber gets removed from a list. (more... ) --- ### Email Automation Trigger: Tag added - Published: 2025-01-11 - Modified: 2025-03-19 - URL: https://kb.mailster.co/email-automation-trigger-tag-added/ - Categories: Automation - Tags: trigger - Post series: Trigger This trigger starts a workflow whenever a tag is assigned to a subscriber. You can also run a workflow whenever a tag is removed from a subscriber. (more... ) --- ### Email Automation Trigger: Field updated - Published: 2025-01-11 - Modified: 2025-03-26 - URL: https://kb.mailster.co/email-automation-trigger-field-updated/ - Categories: Automation - Tags: trigger - Post series: Trigger This trigger starts a workflow if a specific field from a subscriber is added or updated. (more... ) --- ### Email Automation Trigger: Form Conversion - Published: 2025-01-11 - Modified: 2025-03-19 - URL: https://kb.mailster.co/email-automation-trigger-form-conversion/ - Categories: Automation - Tags: trigger - Post series: Trigger This trigger will start a workflow if a user signs up through a specific form and confirms the subscription. (more... ) --- ### Email Automation Trigger: Click a link - Published: 2025-01-11 - Modified: 2025-03-26 - URL: https://kb.mailster.co/email-automation-trigger-click-a-link/ - Categories: Automation - Tags: trigger - Post series: Trigger Triggers a workflow when a defined link is clicked in one of your campaigns. (more... ) --- ### Email Automation Trigger: Visits a page - Published: 2025-01-11 - Modified: 2025-03-19 - URL: https://kb.mailster.co/email-automation-trigger-visits-a-page/ - Categories: Automation - Tags: trigger - Post series: Trigger You can trigger workflows if subscribers visit a certain page on your website. (more... ) --- ### Email Automation Trigger: Custom Hook - Published: 2025-01-11 - Modified: 2025-03-19 - URL: https://kb.mailster.co/email-automation-trigger-custom-hook/ - Categories: Automation - Tags: trigger - Post series: Trigger Run a workflow with custom PHP code. This is useful if you like to extend your custom applications with action. (more... ) --- ### Email Automation Trigger: Anniversary - Published: 2025-01-11 - Modified: 2025-01-31 - URL: https://kb.mailster.co/email-automation-trigger-anniversary/ - Categories: Automation - Tags: trigger - Post series: Trigger Run a workflow on the anniversary of your subscribers, like birthdays or membership dates. If you would like to start a workflow on a specific date (and not on the anniversary of that date) check the Specific date Trigger. (more... ) --- ### Email Automation Trigger: Specific date - Published: 2025-01-11 - Modified: 2025-03-19 - URL: https://kb.mailster.co/email-automation-trigger-specific-date/ - Categories: Automation - Tags: trigger - Post series: Trigger This trigger starts a workflow on a specific date. If you like to send anniversary messages for birthdays check out the Anniversary Trigger. (more... ) --- ### Upgrading Your License - Published: 2024-09-02 - Modified: 2025-03-19 - URL: https://kb.mailster.co/upgrading-your-license/ - Categories: Tips - Tags: license With Mailster you always have the option to switch to a different plan or upgrade your license to more sites at any time. From within the plugin To up or downgrade your license from your WordPress Dashboard, click the "Account" page in the Newsletter menu and find the "Change Plan" button. This option is unavailable if you hide sensitive info on your site. From your account page Go to your Mailster account page and log in with your email address. Go to "Licenses" and click on the license you like to upgrade. Find the option to either up or downgrade your license to a new plan or a different amount of sites. --- ### Missing or wrong Translations - Published: 2024-08-07 - Modified: 2025-03-19 - URL: https://kb.mailster.co/missing-or-wrong-translations/ - Categories: General - Tags: language, translate, translation Mailster is available in over 20 languages and we do our best to keep these languages up to date. Since Mailster comes with over 3,000 strings or over 16,000 words it's hard to have them correct all the time. If you spot a wrong translation or a missing string, you can sign up at our Translator Program and get a free Professional as long as you help keep the translation in your desired language up to date. Join the Translator Program --- ### Inspect the Queue of your Workflow Step - Published: 2024-08-05 - Modified: 2025-03-19 - URL: https://kb.mailster.co/inspect-the-queue-of-your-workflow-step/ - Categories: Automation - Tags: automation, queue Usually, steps are processed in a single process but some steps need to delay this. This is obvious for steps like Delay or Email, but Mailster may queue subscribers on other steps as well. (more... ) --- ### Email Automation: Notification - Published: 2024-05-02 - Modified: 2025-03-19 - URL: https://kb.mailster.co/email-automation-notification/ - Categories: Automation, Getting Started - Tags: automation - Post series: Automations Sometimes it's necessary to get notified if a certain point in your workflow is reached. You can send a notification via email to any email address in this step. (more... ) --- ### Email Automation: Jumper - Published: 2024-05-02 - Modified: 2025-03-19 - URL: https://kb.mailster.co/email-automation-jumper/ - Categories: Automation, Getting Started - Tags: automation - Post series: Automations Sometimes you need a way to skip a step or jump to a different point in your workflow. This is what jumpers are made for. They offer an easy way to jump to a different position in your customer journey. (more... ) --- ### How to manage your licenses for Mailster - Published: 2024-01-28 - Modified: 2025-03-19 - URL: https://kb.mailster.co/how-to-manage-your-licenses-for-mailster/ - Categories: Tips, Troubleshoot - Tags: freemius, license The licensing system of Freemius operates on license keys allocated to each product acquired via the platform. When a license key is activated on a site, it provides access to support services and automatic updates for that site. Where to find the license keys? After finalizing an order, you will receive an email from Freemius with details about your purchased products. This email will also contain the license key for the product. Below is an excerpt from a sample email that illustrates the license key: Additionally, you can locate your license keys by visiting the Account page on the Mailster website. Once logged in, navigate to the Licenses section. There, you'll find a list of licenses associated with your account. For example: Where is my license? The Freemius licensing system is designed for user convenience, making it easy to locate your licenses. However, if you're unable to find the information you need, please don't hesitate to contact us. We're here to help and would be delighted to assist you. License keys are essential for receiving automatic updates for plugins and accessing Aelia's support services. If you plan to install a plugin on an alternate site, such as for testing purposes, you can easily upload and activate it there. The plugin will operate even without a license key. However, it's important to note that sites without an active license will not be eligible for support or automatic updates. --- ### Email Health Check - Published: 2024-01-15 - Modified: 2025-01-26 - URL: https://kb.mailster.co/email-health-check/ - Categories: Troubleshoot, Tips - Tags: precheck, spam Gmail and Yahoo announced updates to its sender authentication policies, effective February 1, 2024. These changes aim to reduce spam by requiring bulk senders to authenticate emails, support easy unsubscription, and maintain a spam complaint rate under 0. 3%. Bulk senders are defined as those sending to 5,000 or more Gmail recipients per day. The updates include the use of SPF, DKIM, and DMARC email authentication. Additionally, Google advises supporting one-click unsubscribes through specific message headers. Failure to comply with these requirements may lead to emails being marked as spam or not delivered as expected​​. (more... ) --- ### Using Custom Modules - Published: 2023-11-16 - Modified: 2025-01-26 - URL: https://kb.mailster.co/custom-modules/ - Categories: Customization - Tags: modules Modules are segmented sections within your newsletter campaign. Every template is equipped with a range of modules that you can utilize in your emails. These modules can also be referred to as "blocks," similar to those found in the block editor. (more... ) --- ### Send your Newsletters via MailJet - Published: 2023-11-10 - Modified: 2025-03-10 - URL: https://kb.mailster.co/send-your-newsletters-via-mailjet/ - Categories: Tutorial, Extensions, General - Tags: mailjet Mailjet is a highly efficient email marketing tool that seamlessly integrates with Mailster. Notably, it offers exceptional support for bounce handling straight from the get-go. (more... ) --- ### Convert your Legacy Forms - Published: 2023-09-15 - Modified: 2025-03-10 - URL: https://kb.mailster.co/convert-your-legacy-forms/ - Categories: Tips - Tags: forms Mailster 4. 0 introduces a new way to create forms. The new builder is based on the WordPress block editor and your forms created with Mailster before 4. 0 need to be converted. (more... ) --- ### Email Automation: Email - Published: 2023-05-15 - Modified: 2025-03-19 - URL: https://kb.mailster.co/email-automation-email/ - Categories: Automation, Getting Started - Tags: automation - Post series: Automations An email is sent to the subscriber at this stage. (more... ) --- ### Email Automation: Delay - Published: 2023-05-15 - Modified: 2025-03-19 - URL: https://kb.mailster.co/email-automation-delay/ - Categories: Automation, Getting Started - Tags: automation - Post series: Automations Incorporating a delay step entails introducing a brief pause into your workflow. (more... ) --- ### Email Automation: Actions - Published: 2023-05-15 - Modified: 2025-03-19 - URL: https://kb.mailster.co/email-automation-actions/ - Categories: Automation, Getting Started - Tags: automation - Post series: Automations Actions let you do something at a certain point in your workflow. They are useful if you like to do things (except send emails) in your email automation. (more... ) --- ### Email Automation: Triggers - Published: 2023-05-15 - Modified: 2025-03-19 - URL: https://kb.mailster.co/email-automation-triggers/ - Categories: Automation, Getting Started - Tags: automation - Post series: Automations Triggers let you define how to start a workflow for your email marketing automation. (more... ) --- ### Email Automation in WordPress - Published: 2023-05-14 - Modified: 2025-03-19 - URL: https://kb.mailster.co/email-automation-in-wordpress/ - Categories: Getting Started, Automation, Tutorial - Tags: automation - Post series: Automations With Mailster you get a powerful way to automate your email marketing. Email marketing automation can help businesses streamline communication, personalize messaging, and improve customer engagement through automated workflows and targeted campaigns. (more... ) --- ### Kitchen Sink - Published: 2023-05-13 - Modified: 2025-01-27 - URL: https://kb.mailster.co/kitchen-sink/ - Categories: General This article is for testing only. Thanks for your attention! Of Mountains & Printing Presses The goal of this new editor is to make adding rich content to WordPress simple and enjoyable. This whole post is composed of pieces of content—somewhat similar to LEGO bricks—that you can move around and interact with. Move your cursor around and you’ll notice the different blocks light up with outlines and arrows. Press the arrows to reposition blocks quickly, without fearing about losing things in the process of copying and pasting. What you are reading now is a text block the most basic block of all. The text block has its own controls to be moved freely around the post... ... like this one, which is right aligned. Headings are separate blocks as well, which helps with the outline and organization of your content. Embeds https://twitter. com/mailster/status/1793239544126382224 A Picture is Worth a Thousand Words Handling images and media with the utmost care is a primary focus of the new editor. Hopefully, you’ll find aspects of adding captions or going full-width with your pictures much easier and robust than before. If your theme supports it, you’ll see the "wide" button on the image toolbar. Give it a try. Try selecting and removing or editing the caption, now you don’t have to be careful about selecting the image or other text by mistake and ruining the presentation. The Inserter Tool Imagine everything that WordPress can do is available to you quickly and in the same place on... --- ### How can I setup the newsletter homepage? - Published: 2023-05-04 - Modified: 2025-03-19 - URL: https://kb.mailster.co/how-can-i-setup-the-newsletter-homepage/ - Categories: General, Getting Started To ensure the smooth functioning of the subscription and unsubscription process, it is imperative to have a static page as your newsletter homepage. When activating Mailster, you will be prompted to create this page as part of the setup process. (more... ) --- ### Convert your Newsletter Homepage - Published: 2023-05-04 - Modified: 2025-03-13 - URL: https://kb.mailster.co/convert-your-newsletter-homepage/ - Categories: Tutorial - Tags: block forms, forms It is high time to upgrade to the new block forms if you are still using shortcodes on your old newsletter homepage. This guide can help you migrate to the updated version. (more... ) --- ### Update Billing Details and Access Invoices - Published: 2023-04-13 - Modified: 2025-01-26 - URL: https://kb.mailster.co/update-billing-details-and-access-invoices/ - Categories: General If you need to update or add billing information for your entire Freemius account, it's super easy to do so. You can actually handle it all yourself right from your profile! Log in to your account at https://mailster. co/account using the email address you used when you purchased the plugin. Once you're logged in, navigate to the My Profile section. Fill in all the necessary information for your updated billing details. Your changes will be reflected on all past invoices in your order history. Please note that adding a VAT number won't affect any already charged VAT. The change will only apply to future invoices. Mailster user account dashboard Invoices When you purchase or renew your subscription, you'll receive an invoice email from Freemius on our behalf. If you're having trouble locating this email, don't worry - you can easily download all your previous invoices from your account. To do so, simply login to your account using your login details. If you can't remember your password, don't fret - you can follow the prompts to reset it. Once you've logged in successfully, navigate to the Orders History tab. From there, you can download an invoice for each payment by clicking on the blue invoice symbol labeled "Invoice". Order History --- ### Change the length of the excerpt - Published: 2023-03-21 - Modified: 2025-01-26 - URL: https://kb.mailster.co/change-the-length-of-the-excerpt/ - Categories: Tutorial - Tags: filters WordPress has a filter to change the length of the excerpt on your website. The excerpt_length filter helps you to do this. Mailster has a dedicated filter you can use to change the length of excerpts in your email campaigns. (more... ) --- ### Why does my Legacy license expire? - Published: 2023-03-15 - Modified: 2025-01-26 - URL: https://kb.mailster.co/why-does-my-legacy-license-expire/ - Categories: Troubleshoot - Tags: license If you bought a license from Envato after the 1st of October 2022 you see an "Expires in... " badge on your account page. Legacy Licenses will expire in 5 month This means you will no longer get automatic updates via your WordPress dashboard once the license has expired. Your Envato License is still a lifetime license, following the Terms and Conditions from Envato. You have two options: Upgrade your license Click on "Change Plan" to upgrade your license to get future updates. Download a copy from Envato Go to your Envato downloads page and download a copy of the latest version from Mailster. --- ### How can I upgrade my license? - Published: 2023-03-15 - Modified: 2025-03-19 - URL: https://kb.mailster.co/how-can-i-upgrade-my-license/ - Categories: Tips - Tags: license You can upgrade your license directly from the plugin if you go to Newsletter => Account and click on the "Change Plan" button: Change your current plan If you have white-labeled your license you have to insert your license key first. On the following page, you can upgrade your license by inserting your payment details. Optionally you can choose to get another license as well. If you have a VAT ID you should enter it by clicking on "Purchasing as a business". Once you have entered your payment details you have to review your order. Click on "Pay & Subscribe" to complete the checkout process and get redirected back to the account page. --- ### Logging Outgoing Mails in Mailster - Published: 2023-03-15 - Modified: 2025-01-26 - URL: https://kb.mailster.co/logging-outgoing-mails-in-mailster/ - Categories: Features - Tags: logging With Mailster you can log outgoing emails in WordPress. Head over to Newsletter => Settings to find the "Logging" tab. (more... ) --- ### Licensing Information - Published: 2023-03-14 - Modified: 2025-03-17 - URL: https://kb.mailster.co/licensing-information/ - Categories: General - Tags: legacy, license, purchase code You have two ways to purchase Mailster: From mailster. co If you bought Mailster from the official website your licenses are handled by our partner Freemius. From CodeCanyon If you bought a license from CodeCanyon (an Envato Marketplace) the official license agreements are applied to your purchased license. The license is given in form of a unique key (purchase code) which will be used during registration and must be kept secret. (more... ) --- ### Static Map Service - Published: 2023-03-13 - Modified: 2025-03-17 - URL: https://kb.mailster.co/static-map-service/ - Categories: Settings - Tags: maps Mailster uses static image maps of various places like the subscriber's detail page or the new subscriber notification. Head over to Settings => General to choose which one you like to use. (more... ) --- ### Block Forms - Published: 2023-02-27 - Modified: 2025-03-19 - URL: https://kb.mailster.co/block-forms/ - Categories: Documentation - Tags: form, forms If you click on the Block Forms menu entry you can find an overview of your current existing block forms. This is the place where you can manage all your block forms. (more... ) --- ### Templates - Published: 2023-02-26 - Modified: 2025-03-18 - URL: https://kb.mailster.co/templates/ - Categories: Documentation Templates are an essential part of Mailster. They define the look and feel of your campaigns. You can find all installed templates at Newsletter => Templates. (more... ) --- ### Create Custom Templates - Published: 2023-02-26 - Modified: 2025-01-26 - URL: https://kb.mailster.co/create-custom-templates/ - Categories: Documentation General Idea A Mailster Template is a folder containing all individual Template Files and required assets. A Mailster Template can have multiple Template Files. Structure A Mailster Template includes at least two Template Files: index. html notification. html You can add additional Template Files in this folder. While the index. html file contains all available modules the notification. html file contains only a text area that is used for notifications (e. g. confirmation, new subscriber info, and emails used by WordPress with the wp_mail method. Each Template File must include a header, similar to the header of a WordPress Theme: NameInfoTemplate NameThe Name of your TemplateName (optional)The Name of your Template FileTemplate URI (optional)The URL of your templateDescription (optional)A short description to describe your TemplateAuthorThe name of the creatorAuthor URI (optional)The URL of the creatorVersioncurrent version numberWidth (optional)width of the template (Desktop) used for the module screenshots Each Template File is structured as follows: header modules module module ... footer The header and footer can also be inside the modules but only if a tag is wrapping the HTML. Example HTML Let's take a look at this example {subject} /* some styling here (will be inlined) */... --- ### Delete Subscribers - Published: 2023-02-26 - Modified: 2025-03-19 - URL: https://kb.mailster.co/delete-subscribers/ - Categories: Documentation Similar to exporting subscribers you can also delete subscribers. While you can delete subscribers from the Subscribers Overview page it's faster to process large batches via this page. The Delete Subscribers overview Lists: Choose which lists you like to delete. Conditions: Apply conditions to your subscribers (Read more). Status: Choose the status of your subscribers. Remove all actions from affected users This option will remove all actions like clicks, opens, bounces unsubscribes of the selected users. Automation Mailster can keep your list clean and healthy by removing contacts based on defined conditions. Mailster will check your contacts daily and mark matching ones as "deleted". All subscribers with the status of deleted will get removed automatically after 14 days You can find the section to set up automation at the bottom of the "Delete" section at "Manage Subscribers". Common Automation Jobs To keep your lists clean it's recommended to remove old and inactive subscribers. This keeps your list healthy, reduces spam complaints, and increases open and click rates. Here are some examples you can use on your site. Remove all people who have unsubscribed from a certain list. Remove all people who bounced or caused an error after 1 month. Remove all people who have a bad rating and didn't open a campaign within the last 3 months. --- ### Finished Campaigns - Published: 2023-02-26 - Modified: 2025-01-26 - URL: https://kb.mailster.co/finished-campaigns/ - Categories: Documentation Mailster provides detailed statistics about your campaigns and the subscribers who opened them. (more... ) --- ### Subscribers Overview - Published: 2023-02-26 - Modified: 2025-01-27 - URL: https://kb.mailster.co/subscribers-overview/ - Categories: Documentation Mailster allows managing all your subscribers inside your WordPress installation. They are stored in tables in the same database as the regular tables from WordPress. (more... ) --- ### Campaign Overview - Published: 2023-02-25 - Modified: 2025-01-26 - URL: https://kb.mailster.co/campaign-overview/ - Categories: Documentation The Campaign Overview page gives you a quick overview of all your campaigns. It's similar to the post overview page where all. (more... ) --- ### Frontpage - Published: 2023-02-25 - Modified: 2025-03-19 - URL: https://kb.mailster.co/frontpage/ - Categories: Documentation The Frontpage displays your newsletter as a "web version". It provides a top bar with a link to your homepage, the campaign's title, a next and previous button to display the next or previous campaign (if it exists), an optional share button, and a button to close the frame. (more... ) --- ### The Campaign Editor - Published: 2023-02-25 - Modified: 2025-03-19 - URL: https://kb.mailster.co/the-campaign-editor/ - Categories: Documentation The campaign editor is the heart of Mailster and allows you to quickly build your campaigns. You can also create Autoresponder as well as Notification templates. If your campaign has finished this page looks different. The Campaign Edit Screen Similar to Post in WordPress you create a new campaign by clicking on the New Campaign sub-menu entry. Campaign Title First, choose a title for your campaign. The subject could be the same as the title but it's totally up to you. The title is public in some cases (web version). Campaign Details This meta box lets you define mostly meta info for your campaign. Some fields are also defined globally in the settings and can be overwritten on each campaign. Most templates are prepared for "Preheaders" texts. You can define the sender's email address, name, and the address people can reply. Optionbar With the option bar, you can undo/redo the last change of your template. remove all modules from the template. switch to code view to edit the HTML source of your template. switch to plain text view to edit the alternative text for email clients that do not support HTML. preview the campaign. enable "distraction-free writing". open the save dialog to create new template files based on your current one. switch templates and template files. Adding Content To add new content you have to add new modules and fill them with content. You can find the modules of your current template in the module bar on the right (or... --- ### Campaign Precheck - Published: 2023-02-25 - Modified: 2025-01-26 - URL: https://kb.mailster.co/precheck/ - Categories: Documentation - Tags: deliverability, precheck With Mailster you can quickly check your campaigns for deliverability with our precheck feature. (more... ) --- ### I have problems with sending campaigns. - Published: 2023-02-24 - Modified: 2025-01-26 - URL: https://kb.mailster.co/i-have-problems-with-sending-campaigns/ - Categories: Troubleshoot If you encounter problems while sending your campaigns it's most likely a problem with your cron setup. (more... ) --- ### How to read metrics on the campaign overview page. - Published: 2023-02-22 - Modified: 2025-01-26 - URL: https://kb.mailster.co/how-to-read-metrics-on-the-campaign-overview-page/ - Categories: General On the Campaign Overview page, you get an overview of how your campaigns perform. (more... ) --- ### How do I import my subscribers? - Published: 2023-02-22 - Modified: 2025-03-19 - URL: https://kb.mailster.co/how-do-i-import-my-subscribers/ - Categories: Getting Started - Tags: import Before you start sending your first email campaign you may like to import your existing subscribers, into Mailster. You can import your subscribers on the “Manage Subscribers” page. Click on the “Import” tab on the top and select the lists of which subscribers you like to export. (more... ) --- ### Migrating your license to Freemius - Published: 2023-02-15 - Modified: 2025-03-17 - URL: https://kb.mailster.co/migrating-your-license-to-freemius/ - Categories: Tutorial - Tags: license If you bought Mailster on the Envato marketplace you have to migrate your Envato License (purchase code) to a Freemius license. You can do this right from your WordPress Dashboard. (more... ) --- ### Use Advanced Custom Fields in your Newsletter Campaigns - Published: 2022-11-08 - Modified: 2025-01-26 - URL: https://kb.mailster.co/use-advanced-custom-fields-in-your-newsletter-campaigns/ - Categories: Tips, Tutorial - Tags: acf, advanced custom fields Advanced Custom Fields is a popular plugin that can help you add extra content fields to your WordPress edit screens. These extra content fields are more commonly referred to as Custom Fields and can allow you to build websites faster and educate your clients quicker. With Mailster you can use these fields inside your email campaigns (more... ) --- ### Trigger Custom Javascript on Form Submission - Published: 2022-10-27 - Modified: 2025-01-26 - URL: https://kb.mailster.co/trigger-custom-javascript-on-form-submission/ - Categories: General With Mailster Block Forms you can run custom JavaScript on certain actions. This helps when you like to track form submissions with your Analytics software. (more... ) --- ### Warm up your email delivery method. - Published: 2021-06-09 - Modified: 2025-03-19 - URL: https://kb.mailster.co/warm-up-your-email-delivery-method/ - Categories: Tips, Settings - Tags: delivery If you just started with email marketing or switched your delivery provider or even our domain or IP address it's a good practice to not start blasting your provider with too many emails at once. (more... ) --- ### Send your emails as fast as possible. - Published: 2021-06-09 - Modified: 2025-03-19 - URL: https://kb.mailster.co/send-your-emails-as-fast-as-possible/ - Categories: Tips, Settings - Tags: delivery Mailster sends you emails in batches. While this is a technical limitation it also prevents sending too many emails at once which causes server timeouts and even gets banned from your email delivery provider. (more... ) --- ### Prevent spam filters from automatically opening and clicking through links in your campaigns - Published: 2021-06-09 - Modified: 2025-03-24 - URL: https://kb.mailster.co/prevent-spam-filters-from-automatically-opening-and-clicking-through-links-in-your-campaigns/ - Categories: Tips, Settings - Tags: spam Some email spam filters can open and click through the links in your emails to check for malicious content. This can cause false open rates and may also unsubscribe users (if you have single-opt-out enabled). To prevent this Mailster has the option to prevent this behavior. (more... ) --- ### How many mails can I send at once? - Published: 2021-04-13 - Modified: 2025-01-26 - URL: https://kb.mailster.co/how-many-mails-can-i-send-at-once/ - Categories: Tutorial, Settings, Tips - Tags: delivery If you send marketing emails you often like to send them as fast as possible. While this is great in theory it's often not recommended for your general email marketing strategy. (more... ) --- ### Manually replacing a Mailster version - Published: 2021-03-22 - Modified: 2025-03-03 - URL: https://kb.mailster.co/manually-replacing-a-mailster-version/ - Categories: General Mailster has some security mechanisms built in to prevent you from being infected with a malicious version. If you ever come in a situation where you are not sure if you have a legal and clean version directly from us (EverPress) you should immediately follow these steps. (more... ) --- ### Mailster Customization Services - Published: 2020-10-06 - Modified: 2025-01-26 - URL: https://kb.mailster.co/mailster-customization-services/ - Categories: Customization - Tags: codeable Need some custom work done for your website? We have an amazing partner who can help! Read more --- ### Sending post-purchase coupon codes to WooCommerce customers. - Published: 2020-08-15 - Modified: 2025-01-26 - URL: https://kb.mailster.co/sending-post-purchase-coupon-codes-to-woocommerce-customers/ - Categories: Tutorial - Tags: autoresponder, coupon, woocommerce In many cases, you would like to offer a discount for your customers once they buy a certain product. With Mailster and WooCommerce you can do this pretty simply. (more... ) --- ### Send your newsletters via Gmail - Published: 2020-06-22 - Modified: 2025-01-26 - URL: https://kb.mailster.co/send-your-newsletters-via-gmail/ - Categories: Tutorial, Extensions - Tags: gmail, google Gmail by Google is a great email delivery provider and you can use it to send all your newsletter campaigns with Mailster. In general, we do not recommend using Gmail for marketing emails so you better look out for an alternative. Since Gmail is not built for sending marketing emails you have to consider a couple of things: Google is very restrictive with its service and if your subscribers starting mark your emails as spam you most likely get banned from the platform. With a free Gmail account you have more limits than with a paid G Suite account (Read more about limits). You should only send from your Gmail address (free users) or your registered G Suite addresses. (more... ) --- ### The Mailster Cookie - Published: 2020-01-24 - Modified: 2025-01-26 - URL: https://kb.mailster.co/the-mailster-cookie/ - Categories: General - Tags: cookie Whenever a subscriber clicks a link in a campaign Mailster sets a cookie on your domain to identify the user at a later point. This is required as often the subscriber doesn't have an account on your site or is not logged in. (more... ) --- ### Grace Period - Published: 2019-09-24 - Modified: 2025-01-26 - URL: https://kb.mailster.co/grace-period/ - Categories: Tips, Developer - Tags: autoresponder In Mailster you can have multiple autoresponders to trigger your campaigns automatically. Some of them have a date or timestamp to get triggered within a certain timeframe. To not go way back to the beginning of time (and to accidentally send to all your subscribers) Mailster uses a "Grace Period". (more... ) --- ### List Based and Global Subscriptions - Published: 2019-09-09 - Modified: 2025-03-20 - URL: https://kb.mailster.co/list-based-and-global-subscriptions/ - Categories: General, Settings - Tags: status, subscriptions Mailster can handle subscriptions in two different ways. List-based subscriptions (default) Global subscriptions (more... ) --- ### Encode Tags for Links - Published: 2019-09-01 - Modified: 2025-01-26 - URL: https://kb.mailster.co/encode-tags-in-links/ - Categories: Tutorial, Developer - Tags: tags If you are using Tags in Mailster you may like to use them in your links as well. Since links must be encoded the content of your tags must be encoded as well. (more... ) --- ### RSS Email Campaigns - Published: 2019-05-22 - Modified: 2025-03-17 - URL: https://kb.mailster.co/rss-email-campaigns/ - Categories: Features - Tags: autoresponder, legacy, rss Mailster can use RSS Feeds to automatically create your recurring autoresponders. This method is useful if you like to use content from a different website. If you like to use posts from your own site (where Mailster is installed) you better go with regular dynamic tags. (more... ) --- ### Dynamic Custom Post Types - Published: 2019-05-22 - Modified: 2025-01-26 - URL: https://kb.mailster.co/dynamic-custom-post-types/ - Categories: Developer, Features - Tags: post types, tags Mailster has a powerful tag engine built in where you can dynamically populate your newsletter campaigns. Dynamic Custom Post Types work similarly to regular post types but are not stored in your database but generate content on demand. (more... ) --- ### Random Dynamic Posts - Published: 2019-05-22 - Modified: 2025-01-26 - URL: https://kb.mailster.co/random-dynamic-posts/ - Categories: Features - Tags: random, tags If you are familiar with dynamic posts in Mailster you will quickly understand the usage of random posts. (more... ) --- ### WordPress displays a 404 error after updating the campaign - Published: 2019-05-11 - Modified: 2025-01-26 - URL: https://kb.mailster.co/wordpress-displays-a-404-error-after-updating-the-campaign/ - Categories: Troubleshoot - Tags: 404 If you ever experienced this problem that your WordPress site redirects you to https://yoursite. com/wp-admin/post. php it may be caused by false settings in your mod_security the module on your server. (more... ) --- ### Use Unsplash images in Email Campaigns - Published: 2019-04-12 - Modified: 2025-01-26 - URL: https://kb.mailster.co/unsplash/ - Categories: Features - Tags: picpicker, unsplash With Mailster you can use over 1. 000. 000 photos for free directly in the editor. All photos are released under the Unsplash License. (more... ) --- ### What information will be tracked by opting into usage tracking? - Published: 2019-03-19 - Modified: 2025-01-26 - URL: https://kb.mailster.co/usage-tracking/ - Categories: Settings We no longer track this info since Mailster 4. 0. If you still use an older version you should consider updating! On installing or updating the plugin, Mailster will ask if you would like to opt into usage tracking. By doing this, you are helping us with better planning of new features, fixing bugs, and prioritizing development based on user feedback. (more... ) --- ### Why do my emails end up in the Gmail Promotions Tab? - Published: 2019-02-26 - Modified: 2025-01-26 - URL: https://kb.mailster.co/why-do-my-emails-end-up-in-the-gmail-promotions-tab/ - Categories: Troubleshoot - Tags: gmail When you send your Mailster campaigns Google will scan the incoming message and - depending on the kind of content - assigns the email to the Primary Inbox, to the Social Tab, or to the Promotions Tab. The idea is to ensure that the Primary Inbox remains clean and make it easier for their users to find the information that matters to them the most. (more... ) --- ### Permalink Structure - Published: 2019-02-25 - Modified: 2025-01-26 - URL: https://kb.mailster.co/permalink-structure/ - Categories: Troubleshoot, Tips - Tags: links, permalinks Mailster uses custom rewrite rules to process certain actions and to route users on the newsletter homepage. If you have problems with links this article can help. (more... ) --- ### I have problems registering the plugin - Published: 2019-02-17 - Modified: 2025-01-26 - URL: https://kb.mailster.co/i-have-problems-registering-the-plugin/ - Categories: Troubleshoot - Tags: license, license code, licensecode, na, purchase code Update 15th March 2023This Article is no longer valid. If you install Mailster you have to validate your purchase code. This ensures you have a valid license and are eligible to use Mailster on your site. Here are the error messages which can show up during the verification process. The Mailster Verification Form (more... ) --- ### Working with animated GIFs in Mailster - Published: 2019-02-12 - Modified: 2025-01-26 - URL: https://kb.mailster.co/working-with-animated-gifs-in-mailster/ - Categories: Tutorial, Tips - Tags: gif Animated GIFs can bring some life to your email marketing campaigns. Since Mailster uses WordPress native methods to resize images, so they fit correctly and reduce file size, the animation is may lost during this process. (more... ) --- ### Handling Bounces with AmazonSNS - Published: 2018-11-27 - Modified: 2025-01-26 - URL: https://kb.mailster.co/handling-bounces-with-amazonsns/ - Categories: Tutorial, Extensions - Tags: amazonses If you are sending your Campaigns with Amazon's Simple Email Service you can use the regular Bounce option that comes with Mailster. If you like to have more control over bounces you should switch to AmazonSNS. (more... ) --- ### How many subscribers can Mailster handle? - Published: 2018-10-30 - Modified: 2025-01-26 - URL: https://kb.mailster.co/how-many-subscribers-can-mailster-handle/ - Categories: Troubleshoot, Tips - Tags: performance Technically there are no limits in Mailster. You can have unlimited subscribers, lists, forms, and campaigns. There are some server-related limits though. (more... ) --- ### Send your Newsletters via SendGrid - Published: 2018-10-10 - Modified: 2025-02-03 - URL: https://kb.mailster.co/send-your-newsletters-via-sendgrid/ - Categories: Tutorial, Extensions - Tags: sendgrid, smtp SendGrid is a powerful sending provider that works with Mailster. (more... ) --- ### How to migrate Mailster to a new site - Published: 2018-10-01 - Modified: 2025-01-26 - URL: https://kb.mailster.co/how-to-migrate-mailster-to-a-new-site/ - Categories: Tutorial - Tags: export, import Depending on your license you can use Mailster on one site or more. If you like to use your single-use license on a different domain and move all the data from Site A to Site B you have to follow some steps. (more... ) --- ### User Ratings - Published: 2018-09-12 - Modified: 2025-01-19 - URL: https://kb.mailster.co/user-ratings/ - Categories: General, Features - Tags: rating, subscriber User or Subscriber ratings are a quick way to see the most engaging subscribers in Mailster. (more... ) --- ### Adding Content to your Forms - Published: 2018-06-04 - Modified: 2025-03-10 - URL: https://kb.mailster.co/adding-content-to-your-forms/ - Categories: Customization, Developer - Tags: form, forms, legacy This article is used for Legacy Forms and no longer works on Block Forms! Mailster forms can be defined and customized via the forms page. You can add additional content via some coding by using the mailster_form filter hook. (more... ) --- ### Disabling the Inline Editor - Published: 2018-04-23 - Modified: 2025-03-17 - URL: https://kb.mailster.co/disabling-the-inline-editor/ - Categories: Customization - Tags: editor, legacy This article is no longer relevant to the latest version of Mailster. The Inline Editor in Mailster was made to improve the workflow and speed up the process of creating campaigns and autoresponders. If you like to bring back the old editor you can use one simple code line. (more... ) --- ### Mailster Subscriber Query - Published: 2018-04-04 - Modified: 2025-02-03 - URL: https://kb.mailster.co/subscriber-query/ - Categories: Developer - Tags: query, segmentation Mailster offers an easy way to get your subscribers via segmentation. If you like to get more out of this via some custom coding you can use the Subscriber Query. (more... ) --- ### Using Multi language Newsletter with WPML - Published: 2018-04-03 - Modified: 2025-01-26 - URL: https://kb.mailster.co/using-multi-language-newsletter-with-wpml/ - Categories: Tutorial, Extensions - Tags: wpml With Mailster you can send multi-language campaigns if you use the WPML plugin for your site. multi --- ### Security Nonce is invalid - Published: 2018-04-02 - Modified: 2025-01-26 - URL: https://kb.mailster.co/security-nonce-is-invalid/ - Categories: Troubleshoot - Tags: form, nonce Mailster form uses WordPress Nonces to prevent invalid form submissions. These nonces can expire in some cases which causes an error message if you like to sign up for a newsletter. (more... ) --- ### Mailster and GDPR - Published: 2018-03-28 - Modified: 2025-01-26 - URL: https://kb.mailster.co/gdpr/ - Categories: Tips - Tags: gdpr The General Data Protection Regulation (GDPR) is enforceable as law in all EU member states on May 25, 2018. While Mailster is in technical compliance with this law you may have to bring some additional things in place to make the whole process compliant for your site. (more... ) --- ### Mail Headers in Mailster - Published: 2018-03-04 - Modified: 2025-01-26 - URL: https://kb.mailster.co/mail-headers-in-mailster/ - Categories: Developer - Tags: header Each mail sent with Mailster is technically a multi-part message in MIME format. It contains three sections: Header Plain Text Part HTML Part (more... ) --- ### Adding Posts to your Campaign - Published: 2017-11-09 - Modified: 2025-01-26 - URL: https://kb.mailster.co/adding-posts-to-your-campaign/ - Categories: General, Getting Started - Tags: content, post types, tags One of the core features of Mailster is the deep integration with WordPress. To get your posts and articles into your campaign you have two ways to add them. Next to regular posts, you can also include pages or any custom post type in the same fashion. (more... ) --- ### WordPress Users in Mailster - Published: 2017-09-28 - Modified: 2025-01-26 - URL: https://kb.mailster.co/wordpress-users-in-mailster/ - Categories: Getting Started - Tags: subscribers, users, WordPress users Mailster has a dedicated list of your subscribers so your WordPress users are by default not connected to your Mailster subscriber base. There are several ways to connect them and work with segmentation on the user data. (more... ) --- ### Send your Newsletters via Mailgun - Published: 2017-09-15 - Modified: 2025-03-19 - URL: https://kb.mailster.co/send-your-newsletters-via-mailgun/ - Categories: Tutorial, Extensions - Tags: mailgun Mailgun is a developer-friendly email provider and if you use Mailster you can use it to send your campaigns. (more... ) --- ### Validating Custom Fields - Published: 2017-08-14 - Modified: 2025-01-28 - URL: https://kb.mailster.co/validating-custom-fields/ - Categories: Customization, Developer, Tutorial - Tags: custom fields Mailster gives you the option to define custom fields where you can store additional information of your subscribers. Sometimes you need to verify these values with some custom code. (more... ) --- ### Send your Newsletters via SparkPost - Published: 2017-08-08 - Modified: 2025-03-17 - URL: https://kb.mailster.co/send-your-newsletters-via-sparkpost/ - Categories: Tutorial, Extensions - Tags: smtp, sparkpost With SparkPost you get a solid delivery provider. There's some setup required before you can use this service though. SparkPost no longer offers a free tier but you can test their service with a "Test Account". (more... ) --- ### Using WooCommerce in your Newsletter Campaigns - Published: 2017-08-03 - Modified: 2025-01-26 - URL: https://kb.mailster.co/using-woocommerce-in-your-newsletter-campaigns/ - Categories: Customization, Tips, Tutorial - Tags: woocommerce If you're running a WooCommerce Shop and like to send your latest products to your audience you can use Mailster with the WooCommerce add-on. (more... ) --- ### Get the current subscriber - Published: 2017-07-30 - Modified: 2025-01-26 - URL: https://kb.mailster.co/get-the-current-subscriber/ - Categories: Developer - Tags: functions.php Sometimes you need the current subscriber on your website. Mailster has some built-in methods to get this information. (more... ) --- ### Where are the module screenshots? - Published: 2017-07-27 - Modified: 2025-03-17 - URL: https://kb.mailster.co/where-are-the-module-screenshots/ - Categories: Troubleshoot, Templates - Tags: module, screenshots Mailster tries to create screenshots of your template files on the fly on one of our servers. This should happen without any further action but doesn't in a couple of situations. When you create a new campaign with a template for the first time you may miss the module screenshots on the right.  This can be caused by these reasons: (more... ) --- ### Why does the {post_image} tag not work? - Published: 2017-07-23 - Modified: 2025-01-26 - URL: https://kb.mailster.co/why-does-the-post_image-tag-not-work/ - Categories: Troubleshoot - Tags: editbar If you know Tags in Mailster you may know the {post_image:X} tag. It uses the feature image of the chosen post with ID X. Beside other tags this one works a bit differently. (more... ) --- ### How to redirect after form submission? - Published: 2017-06-26 - Modified: 2025-03-10 - URL: https://kb.mailster.co/how-to-redirect-after-form-submission/ - Categories: Customization - Tags: form, forms By default Mailster forms are ajax based and you get a nice confirmation message after your users have submitted the form. If you like to redirect them to a specific page you can find this option in the form settings. (more... ) --- ### Keep certain tags in your campaigns - Published: 2017-06-13 - Modified: 2025-01-26 - URL: https://kb.mailster.co/keep-certain-tags-in-your-campaigns/ - Categories: Customization, Developer - Tags: tags By default, Mailster will remove all unused tags in the final version of your campaign. To prevent that you can whitelist certain tags with some custom code. (more... ) --- ### Using Mailster Forms (Deprectated) - Published: 2017-06-02 - Modified: 2025-03-19 - URL: https://kb.mailster.co/using-mailster-forms/ - Categories: Customization, Getting Started - Tags: form, legacy Mailster includes sign-up forms you can use in many different ways. If you are running other websites- whether they are based on WordPress, a different CMS, or just plain HTML - you can embed external forms to collect leads on them. This article is about Legacy Forms - Check out the new, block-based forms if you use them. (more... ) --- ### Saving new Template Files - Published: 2017-06-01 - Modified: 2025-01-26 - URL: https://kb.mailster.co/saving-new-template-files/ - Categories: Customization, Templates, Tutorial - Tags: template Mailster Templates give you a great start to get your campaigns going. If the provided modules don't fit your needs or you like to have custom starting content you should save your custom template file. (more... ) --- ### Adding a Terms of Service checkbox to your forms - Published: 2017-05-28 - Modified: 2025-02-10 - URL: https://kb.mailster.co/adding-a-terms-of-service-checkbox-to-your-forms/ - Categories: Customization - Tags: gdpr, legal This article is no longer valid if you use Block Forms. Please check out the guide here. Many countries have strict laws when it comes to email marketing which is a good thing. With Mailster you have a tool you can fulfill legal requirements from almost any country in the world. Some countries require you to add a confirmation checkbox where users have to agree that they sign up for your service. (more... ) --- ### Moving subscribers to different lists - Published: 2017-05-24 - Modified: 2025-01-26 - URL: https://kb.mailster.co/moving-subscribers-to-different-lists/ - Categories: Customization, Developer - Tags: lists It's easy to assign subscribers to the list with the UI of Mailster. Just select the subscribers you like to assign and select the option from the drop-down. To get more specific you need to add some custom code to your website. (more... ) --- ### Changing the static Auto Tag Output - Published: 2017-05-24 - Modified: 2025-01-26 - URL: https://kb.mailster.co/changing-the-static-auto-tag-output/ - Categories: Customization - Tags: auto tag, tags Next to dynamic content, you can also find your static content in the auto feature of Mailster. To change the output you have to add some custom code to your themes functions. php. (more... ) --- ### Adding custom code to your website - Published: 2017-05-20 - Modified: 2025-01-26 - URL: https://kb.mailster.co/adding-custom-code-to-your-website/ - Categories: Customization, Tips - Tags: functions.php, third party plugin Sometimes it's required to add custom code that extends the functionality of your website. In WordPress, you have two ways that are recommended. (more... ) --- ### Adding a Date Picker to your forms - Published: 2017-05-20 - Modified: 2025-03-19 - URL: https://kb.mailster.co/adding-a-date-picker-to-your-forms/ - Categories: Customization - Tags: datepicker, form, na This method is for legacy forms only! If you use block forms you have built-in date pickers already. Custom Fields can store different values from your subscribers. If you like to create a Birthday campaign for instance you have to set up a date field. By default, there's no date picker applied to that field as the look wouldn't match your theme. (more... ) --- ### How to remove Visual Composer shortcodes in campaigns - Published: 2017-04-27 - Modified: 2025-01-26 - URL: https://kb.mailster.co/how-to-remove-visual-composer-shortcodes-in-campaigns/ - Categories: Tips - Tags: shortcodes, visual composer If you are using Visual Composer to create your content in WordPress you may find the used shortcodes in your campaign. (more... ) --- ### Mails are send but not delivered - Published: 2017-04-27 - Modified: 2025-01-26 - URL: https://kb.mailster.co/mails-are-send-but-not-delivered/ - Categories: Troubleshoot - Tags: sendmail, smtp When Mailster sends an email via your chosen delivery method it always relies on the response of your sending server. Sometimes the message has been sent but not actually delivered. (more... ) --- ### Setup Automatic Bounce Handling - Published: 2017-03-28 - Modified: 2025-01-26 - URL: https://kb.mailster.co/setup-automatic-bounce-handling/ - Categories: General - Tags: bounce Mailster can automatically process bounces which requires some setup. All emails sent before this setup do not get processed. (more... ) --- ### Mailster and WooCommerce - Published: 2017-03-20 - Modified: 2025-03-18 - URL: https://kb.mailster.co/mailster-and-woocommerce/ - Categories: Extensions - Tags: woocommerce If you are running your own shop with WooCommerce and would like to get your customers as subscribers to your newsletter campaigns check out the WooCommerce add-on available for free on the WordPress repo. (more... ) --- ### Access to admin-ajax.php is blocked - Published: 2017-03-19 - Modified: 2025-01-26 - URL: https://kb.mailster.co/access-to-admin-ajax-php-is-blocked/ - Categories: Troubleshoot - Tags: ajax The admin-ajax. php file is used by Mailster to perform various actions in your backend. If this file is blocked or not accessible it's most likely Mailster isn't working correctly. (more... ) --- ### Changing text snippets - Published: 2017-03-18 - Modified: 2025-01-26 - URL: https://kb.mailster.co/changing-text-snippets/ - Categories: Customization, Developer - Tags: text Mailster has some internal texts which are used at various locations. By default, you can change them on the Text tab in the settings but if you like a more flexible approach you can simply change them by a hook via the mailster_text filter. (more... ) --- ### Add custom dynamic tags to your newsletter - Published: 2017-03-18 - Modified: 2025-01-26 - URL: https://kb.mailster.co/add-custom-dynamic-tags-to-your-newsletter/ - Categories: Customization - Tags: tags Sometimes you need to add some custom dynamic content to your newsletters. You may use it for coupon codes, custom status, or even the weather in a specific region. To achieve that you can start with this snippet (more... ) --- ### Sending Plain Text Emails - Published: 2017-03-13 - Modified: 2025-01-26 - URL: https://kb.mailster.co/sending-plain-text-emails/ - Categories: Customization, Templates, Tips - Tags: plain text For tracking reasons, you can only send HTML emails in Mailster. If you like to send plain text messages there is a simple trick you can do. (more... ) --- ### How to add a Google Maps API Key - Published: 2017-02-02 - Modified: 2025-03-12 - URL: https://kb.mailster.co/how-to-add-a-google-maps-api-key/ - Categories: Tutorial - Tags: google, maps Mailster uses Google Maps to display the location of your subscribers. To display them you have to set up a Google API Key. (more... ) --- ### Add Subscribers - Published: 2017-01-12 - Modified: 2025-02-10 - URL: https://kb.mailster.co/add-subscribers/ - Categories: Developer You can quickly add subscribers in Mailster with some line of code. (more... ) --- ### Mailster for Developers - Published: 2017-01-12 - Modified: 2025-01-26 - URL: https://kb.mailster.co/mailster-for-developers/ - Categories: Developer You can check for Mailster with if( function_exists( 'mailster' ) ){ // do stuff with Mailster } To run your code you should wrap it in the Mailster Closure The Mailster Closure ensures your code gets only executed if Mailster is completely loaded. If Mailster is not installed or activated it will simply be ignored. add_action( 'mailster', function{ // add your custom coding here. }); You can have multiple Mailster Closures in your plugin. Adding new subscribers in Mailster is done with the "add" method of the subscribers class. $subscriber_id = mailster( 'subscribers' )->add($entry, $overwrite); $subscriber_id contains the ID of the inserted subscriber or a WP_Error object if it fails. $entry can be a single email as a string or an associative array with field => values pairs $overwrite overwrites the subscriber with the same email if exists $subscriber_id = mailster( 'subscribers' )->add( array( 'firstname' => 'John', 'lastname' => 'Doe', 'email' => 'john. doe@example. com', 'status' => 1, //1 = subscribed (default) , 0 = pending, 2 = unsubscribed, 3 = hardbounced 'custom-field' => 'Custom Value', 'referer' => 'Your referer' //default = $_SERVER ... ), $overwrite ); To assign lists you can use the assign_lists method like $success = mailster( 'subscribers' )->assign_lists( $subscriber_ids, $lists, $remove_old = false, $added = null ); $subscriber_ids is either a single id or an array with id’s of your subscribers $lists is either a single id or an array with id’s of lists $remove_old will remove all assigned lists before assigning the new one $added timestamp when the user was... --- ### Tags in Mailster - Published: 2016-12-28 - Modified: 2025-03-19 - URL: https://kb.mailster.co/tags-in-mailster/ - Categories: Customization, Getting Started - Tags: tags Tags are placeholders in your campaigns and are an essential part of Mailster. They always get replaced with their desired content when the campaign is prepared to send you preview the campaign you visit the web version of a campaign (more... ) --- ### Your First Campaign - Published: 2016-12-28 - Modified: 2025-01-26 - URL: https://kb.mailster.co/your-first-campaign/ - Categories: Getting Started - Tags: editor, optionbar If you have successfully activated the plugin you can create your first campaign like a regular post. Click on "New Campaign" in the "Newsletter" Menu. (more... ) --- ### How to install Mailster - Published: 2016-12-28 - Modified: 2025-03-17 - URL: https://kb.mailster.co/how-to-install-mailster/ - Categories: Getting Started - Tags: install You can install Mailster by going to your Plugins page and clicking on the "Add New" button at the top of the page. https://www. youtube. com/watch? v=IYOXRbwSCpw Continue by clicking on "Upload Plugin" and selecting the mailster-x. x. x-zip from your desktop. Click on "Install Now" and the package will get uploaded and extracted on your WordPress site. After this step, you can directly activate the plugin. If you are using a fresh version of Mailster you will get redirected to the Setup Wizard which helps you to set up Mailster to your needs. --- ### Updating MyMail to Mailster - Published: 2016-12-22 - Modified: 2025-02-03 - URL: https://kb.mailster.co/updating-mymail-to-mailster/ - Categories: General Providing our customers with the best email marketing software possible to increase their interaction and grow their business has always been our main goal. To serve you even better in the future we are changing some important things in how we manage and help our customers. (more... ) --- ### Working with action hook auto responders - Published: 2016-07-31 - Modified: 2025-01-26 - URL: https://kb.mailster.co/working-with-action-hook-auto-responders/ - Categories: Tutorial, Autoresponder, Series - Post series: Auto responder This is the fourth part of a short series about auto responders in Mailster. Last time we created a time-based autoresponder. Today we take a tour of the next type of autoresponders: Action Hook Auto Responders (more... ) --- ### What is a Cron Lock? - Published: 2016-07-19 - Modified: 2025-03-07 - URL: https://kb.mailster.co/what-is-a-cron-lock/ - Categories: General - Tags: cron, cronjob When Mailster sends your campaigns it wants to make sure no duplicate emails reach your customers. For this reason, a cron lock gets created when Mailster processes the queue. (more... ) --- ### How to alter the buttons in the text editor? - Published: 2016-07-13 - Modified: 2025-03-18 - URL: https://kb.mailster.co/how-to-alter-the-buttons-in-the-text-editor/ - Categories: Customization - Tags: editor You can change the text in your email campaigns with a rich text editor. The reason you may miss some buttons in the editor is that emails are not often WYSIWYG. To prevent confusion some options are missing but you can easily add more if you need. (more... ) --- ### Post Thumbnail, Oembed, and Open Graph - Published: 2016-06-22 - Modified: 2025-03-03 - URL: https://kb.mailster.co/post-thumbnail-oembed-and-open-graph/ - Categories: Features Images say more than a thousand words. You may know this when adding a Feature Image to your posts but now you can do this for your newsletter campaigns too. (more... ) --- ### New Subscriber Notification Options - Published: 2016-06-13 - Modified: 2025-03-17 - URL: https://kb.mailster.co/new-subscriber-notification-options/ - Categories: Features - Tags: subscriptions For users who have many new subscribers each day it quickly gets annoying to receive a notification for each new fan. If you still like to know your subscribers you can enable this option to get a nice summary of recent subscriptions. (more... ) --- ### Send your Newsletters via Amazon's SES - Published: 2016-06-03 - Modified: 2025-03-13 - URL: https://kb.mailster.co/send-your-newsletters-via-amazons-ses/ - Categories: Tutorial, Extensions - Tags: amazonses It's really recommended to send your newsletters via a dedicated email service provider. One of the big players in this field is Amazon's Simple Email Service (SES). (more... ) --- ### Changing the dynamic Auto Tag Output - Published: 2016-06-01 - Modified: 2025-01-26 - URL: https://kb.mailster.co/changing-the-dynamic-auto-tag-output/ - Categories: Customization - Tags: auto tag, tags If you regularly include dynamic posts in your campaigns you are familiar with the auto feature of Mailster. To change the content of this feature you can add a simple function in your themes function. php file. (more... ) --- ### SMTP Error: data not accepted - Published: 2016-05-31 - Modified: 2025-01-26 - URL: https://kb.mailster.co/smtp-error-data-not-accepted/ - Categories: Troubleshoot - Tags: delivery, smtp This error occurs if you're sending via SMTP. The SMTP server rejects the mail for several reasons: Your server doesn't allow different sender and usernames Some servers require that the From email address is the same as the email address used to authenticate. Check your from-name and match it to the username you use to log in to your SMTP server. The file size of your message is too large Some servers reject a message if the body is too large. HTML emails in general are bigger than normal text messages but you should try to decrease the size by removing some content or disabling embedded images. The receiver is blacklisted or blocked Sometimes certain email addresses are blocked and to prevent getting blacklisted the server rejects your message. The best resolution is to choose a different delivery method. It's a temporary issue Sometimes the email server responds with this error if some limits have been reached or you're sending "too fast". Please pause your campaigns for a while and try again later. If you are sending via Amazon SES you must have verified the from, reply-to, and bounce address you are using in your mailings. --- ### Why does support expire? - Published: 2016-05-30 - Modified: 2025-03-17 - URL: https://kb.mailster.co/why-does-support-expire/ - Categories: General - Tags: support In September 2015 Envato introduced a new way support gets handled. All items purchased after the 1st of September 2015 are under these new terms and authors have to apply to them. https://www. youtube. com/watch? v=NJ5qm2FnSX4 6 Month included With every purchase on the Envato Marketplaces, you get 6 months of support included. How can I renew my Support? You can extend your support period on the item page of the product. Does my support request get answered if my support for the item has expired? If you have submitted the ticket after the 1st of June 2016 a response is not guaranteed. Do I lose the right to answer a ticket if my support has expired? You can reply to your ticket up to 14 days after your license expires. New tickets can't be created if the license is expired. Where's the support policy? You can check out the item support policy on the marketplace. --- ### Translations in Mailster - Published: 2016-02-29 - Modified: 2025-01-26 - URL: https://kb.mailster.co/translations-in-mailster/ - Categories: Tutorial, Getting Started - Tags: translation Mailster is used around the world and while many installations are running with an English localization even more don't.   We are running a Translation Project for Mailster which let you help us fix missing or wrong translations. (more... ) --- ### Creating a series in Mailster - Published: 2016-02-08 - Modified: 2025-01-26 - URL: https://kb.mailster.co/creating-a-series-in-mailster/ - Categories: Tutorial, Autoresponder, Series - Tags: autoresponder - Post series: Auto responder This article is outdated. While the steps explained still work we recommend using Automation for your Series. Creating a series of newsletter campaigns is a good way to keep your subscribers engaged with your service. But what is a series and how do you make it in Mailster? In this tutorial, we cover the basic steps of creating a series in Mailster. (more... ) --- ### Troubleshooting WordPress in 60 Seconds - Published: 2015-12-14 - Modified: 2025-01-26 - URL: https://kb.mailster.co/troubleshooting-wordpress-in-60-seconds/ - Categories: Troubleshoot Mailster has been tested thoroughly and follows the WordPress Coding Standards. This means it should work with every plugin or theme that also follows those standards. If you experience any issue it's often caused by a third-party plugin or your current theme. (more... ) --- ### Why is my WordPress version no longer supported? - Published: 2015-12-04 - Modified: 2025-02-03 - URL: https://kb.mailster.co/why-is-my-wordpress-version-no-longer-supported/ - Categories: Troubleshoot, General WordPress gets constantly updated and every update brings new features and fixes bugs. (more... ) --- ### Ignore certain Posts in your Campaigns - Published: 2015-10-30 - Modified: 2025-03-10 - URL: https://kb.mailster.co/ignore-certain-posts-in-your-campaigns/ - Categories: Tips With Mailster you can send your latest posts automatically to your subscribers but sometimes you would like to exclude certain articles. (more... ) --- ### Understanding subscriber based timezone sending - Published: 2015-10-30 - Modified: 2025-03-12 - URL: https://kb.mailster.co/understanding-subscriber-based-timezone-sending/ - Categories: Tips, Features If your subscribers are located at different timezone and you still like to reach them at the best time of the day this is the option you are looking for. (more... ) --- ### Setup your Birthday campaign with autoresponders - Published: 2015-10-30 - Modified: 2025-03-17 - URL: https://kb.mailster.co/setup-your-birthday-campaign-with-autoresponders/ - Categories: Autoresponder - Tags: autoresponder, legacy With Mailster you can send birthday greetings to your subscribers.  All you need is the birthday as a custom field. (more... ) --- ### Build an Archive of your latest Newsletters - Published: 2015-10-30 - Modified: 2025-01-26 - URL: https://kb.mailster.co/build-an-archive-of-your-latest-newsletters/ - Categories: Tips Displaying the latest campaigns in chronological order can be achieved in an easy way. Just enable the option on the Settings page (tab Front End): (more... ) --- ### Add a list of your latest post in your campaign - Published: 2015-10-30 - Modified: 2025-03-03 - URL: https://kb.mailster.co/add-a-list-of-your-latest-post-in-your-campaign/ - Categories: Tips - Tags: tags People are always interested in new stuff. If not allow them to visit your blog by offering links to older articles (more... ) --- ### Segmentation in Mailster - Published: 2015-10-30 - Modified: 2025-01-26 - URL: https://kb.mailster.co/segmentation-in-mailster/ - Categories: Tips, Features - Tags: conditions, segmentation With segmentation, you can easily narrow down your target audience, allowing for more precise targeting. This enables you to send your campaigns exclusively to specific user groups, optimizing the effectiveness of your marketing efforts. (more... ) --- ### Track your clicks with Google Analytics - Published: 2015-10-30 - Modified: 2025-03-17 - URL: https://kb.mailster.co/track-your-clicks-with-google-analytics/ - Categories: Extensions With Mailster you get many details from your subscribers: clicks opens, unsubscriptions, and bounces. If you watch your website's visitors via an analytics system like Google Analytics or Piwik you can now track your newsletter campaigns with them too. (more... ) --- ### Get a notification on new subscribers - Published: 2015-10-30 - Modified: 2025-03-17 - URL: https://kb.mailster.co/get-a-notification-on-new-subscribers/ - Categories: Tips Getting notifications for new subscribers is simple by enabling the option on the Subscribers tab in settings. (more... ) --- ### Use fullname instead of first- and lastname - Published: 2015-10-30 - Modified: 2025-03-03 - URL: https://kb.mailster.co/use-fullname-instead-of-first-and-lastname/ - Categories: Tips - Tags: tags When you write personalized newsletters you are probably familiar with the {firstname} and {lastname} tag. If you use both you should replace them with {fullname} (more... ) --- ### What is DKIM (DomainKeys Identified Mail)? - Published: 2015-10-30 - Modified: 2025-03-19 - URL: https://kb.mailster.co/what-is-dkim-domainkeys-identified-mail/ - Categories: Tips - Tags: dkim DKIM stands for DomainKeys Identified Mail and is a method for associating a domain name to an email message (Wikipedia) If you don't have a verified domain and you have enabled the DKIM checkbox on the settings page you get a big red box with a white input field. If you send with one of our add-ons, this setting is unnecessary as your provider handles DKIM signing. (more... ) --- ### Working with time based auto responders - Published: 2015-10-30 - Modified: 2025-01-26 - URL: https://kb.mailster.co/working-with-time-based-auto-responders/ - Categories: Tutorial, Autoresponder, Series - Post series: Auto responder Today we take a tour of the next type of autoresponders: Time-based autoresponders What are time-based autoresponders for? They are made to send new campaigns at a specific interval Let's say we would like to send our latest three posts to our subscribers on the first of every month Create a new Campaign Define the subject and the optional preheader text.  You can use the {issue} tag to display the current issue of your autoresponder campaign. It will get increased by one every time a new campaign has been published Create the content of your mail Use the editor to add new modules and use relative tags Dynamic tags work with relative (e. g. third latest post) or absolute (e. g. post with id X). Relative Tag Absolute Tag To change the URL of an image to a dynamic tag just insert the tag in the URL field. Define the delivery options for the autoresponder The next step is to tell that campaign that it’s actually an autoresponder. Click on the autoresponder tab in the delivery meta box. Select the delay and choose "at a specific time" from the dropdown. Choose "1 day" to create a campaign every day. Define the start date of the campaign which is also the next schedule.  You can also define an end date if the campaign is planned for a certain period. If you would like to send your campaign only during weekdays uncheck the unwanted days below The next issue will get increased by one every time a new campaign has been... --- ### Working with action-based autoresponders - Published: 2015-10-30 - Modified: 2025-01-26 - URL: https://kb.mailster.co/working-with-action-based-autoresponders/ - Categories: Tutorial, Autoresponder, Series - Post series: Auto responder Today we take a tour of the next type of autoresponders: Action based autoresponders (more... ) --- ### Working with subscriber-based autoresponders - Published: 2015-10-30 - Modified: 2025-01-26 - URL: https://kb.mailster.co/working-with-subscriber-based-autoresponders/ - Categories: Tutorial, Autoresponder, Series - Post series: Auto responder Today we take a look at Subscriber auto-responders (more... ) --- ### How to add salutation to your subscribers? - Published: 2015-10-10 - Modified: 2025-03-19 - URL: https://kb.mailster.co/how-to-add-salutation-to-your-subscribers/ - Categories: Customization - Tags: subscriber, tags Sometimes it's needed to welcome your subscribers with friendlier words such as "Hello" or "Hi". In some countries, it's also common to have different salutations based on the user's gender. (more... ) --- ### How can subscribers update their subscription? - Published: 2015-07-08 - Modified: 2025-01-26 - URL: https://kb.mailster.co/how-can-subscribers-update-their-subscription/ - Categories: Customization - Tags: form, profile If you would like to give your subscribers the opportunity to update their subscription data you can simply add a {profile} tag in your newsletter campaigns. If subscribers click the link they will get redirected to a subpage on your newsletter homepage. You have to define which form is used for the profile which allows you to increase or limit the fields subscribers can update by themselves Profile from the Newsletter Homepage The link will look something like http://yourdomain. tld/newsletter-signup/profile You can change the "profile" slug on the Frontend settings page For security reasons the link is only accessible after a click in the campaign or if the subscriber is logged in with the matching WordPress User account. Please make sure you have set up your newsletter homepage correctly! --- ### Why does tracking not work? - Published: 2015-06-24 - Modified: 2025-01-28 - URL: https://kb.mailster.co/why-does-tracking-not-work/ - Categories: Troubleshoot - Tags: permalinks, tracking When you send out your campaigns but your statistics claims none of your subscribers opened or clicked your campaign, follow these steps: (more... ) --- ### How to handle bounces with SendGrid? - Published: 2015-06-11 - Modified: 2025-03-18 - URL: https://kb.mailster.co/how-to-handle-bounces-with-sendgrid/ - Categories: Settings - Tags: bounce, sendgrid If you are using SendGrid with Mailster you can also automatically progress bounces. You only need the SendGrid Integration plugin from the WordPress Repo your SendGrid account On the delivery tab, you can find two options for handling bounces Select SendGrid and future bounced email addresses will automatically get marked as hard bounced. If you select Mailster you have to contact SendGrid Support and request to enable "preserve headers" option for your account. This step is required otherwise SendGrid will overwrite the return-path of your emails with their own. You cannot use the WEB API when you handle bounces within Mailster! --- ### How to solve database errors? - Published: 2015-05-24 - Modified: 2025-01-26 - URL: https://kb.mailster.co/how-to-solve-database-errors/ - Categories: Troubleshoot - Tags: database, mysql, sql In some cases, Mailster is not able to create certain tables in your database. You may end up finding an error similar to Table 'wp_mailster_' doesn't exists Visit the update page to force Mailster to create missing database tables by visiting http://example. com/wp-admin/admin. php? page=mailster_update Please replace example. com it with your actual domain. This will run the update progress and the problem should be fixed. You can also deactivate the plugin and activate it again afterward. This will run a DB check and create missing campaigns. --- ### How does tracking in Mailster work? - Published: 2014-12-12 - Modified: 2025-03-03 - URL: https://kb.mailster.co/how-does-tracking-in-mailster-work/ - Categories: General - Tags: tracking With Mailster you can track opens, clicks, unsubscribes, and bounces. (more... ) --- ### Choosing your Delivery Method - Published: 2014-12-11 - Modified: 2025-01-26 - URL: https://kb.mailster.co/choosing-your-delivery-method/ - Categories: General, Getting Started - Tags: delivery Mailster offers by default two delivery methods: Simple SMTP Additionally, you can add more methods with plugins. Delivery option on the settings page. Simple This is the default method and is not recommended for bulk mailing in general. Often providers limit the number of emails that can be sent with this method to prevent spammers. Talk to your host about the limits and if you are allowed to send emails in bulk. Problems? SMTP This is the method you should use if you have many subscribers. Contact your host for the credentials. SMTP requires certain ports to be open. Problems? AmazonSES Send your Newsletters via AmazonSES SparkPost Send your Newsletters via Sparkpost Mailgun Send your Newsletters via Mailgun SendGrid Send your Newsletters via SendGrid Gmail Send your Newsletters via Gmail --- ### How can I increase the sending speed? - Published: 2014-12-11 - Modified: 2025-01-26 - URL: https://kb.mailster.co/how-can-i-increase-the-sending-speed/ - Categories: Getting Started, Settings - Tags: delivery Depending on your delivery method Mailster needs some time to send your campaigns. (more... ) --- ### Why do the links in my emails not work? - Published: 2014-11-14 - Modified: 2025-01-26 - URL: https://kb.mailster.co/why-do-the-links-in-my-emails-not-work/ - Categories: Troubleshoot - Tags: links, permalinks In some cases, you were not able to reach the content of one of your links in a Mailster email. (more... ) --- ### How can I use short codes in Mailster campaigns? - Published: 2014-10-30 - Modified: 2025-03-19 - URL: https://kb.mailster.co/how-can-i-use-short-codes-in-mailster-campaigns/ - Categories: Customization - Tags: short code, shortcodes Shortcodes are disabled by default in Mailster and will be removed from your campaign. The reason is that short codes can inject almost any HTML which may break the whole email. (more... ) --- ### SMTP Error: Could not connect to SMTP host. - Published: 2014-10-29 - Modified: 2025-02-10 - URL: https://kb.mailster.co/smtp-error-could-not-connect-to-smtp-host/ - Categories: Troubleshoot - Tags: delivery, error, smtp Whenever you get a connection error when sending via SMTP like SMTP connect failed. The most common reason for this problem is that the ESP (Email service provider) you have defined in your delivery settings doesn't accept one of the used email addresses. (more... ) --- ### How can I use Mailster with the wp_mail function? - Published: 2014-10-24 - Modified: 2025-03-18 - URL: https://kb.mailster.co/how-can-i-use-mailster-with-the-wp_mail-function/ - Categories: Settings - Tags: delivery, wp_mail Many contact forms or membership plugins use the wp_mail method. With Mailster you can hijack the function and use the Mailster delivery options to send third-party mail. (more... ) --- ### How can I manually upload Mailster templates? - Published: 2014-10-03 - Modified: 2025-03-18 - URL: https://kb.mailster.co/how-can-i-manually-upload-mailster-templates/ - Categories: General, Templates - Tags: template, upload If you don't like or are not able to upload the templates via the Templates section you can upload the files via FTP. (more... ) --- ### How do I know if my cron is working correctly? - Published: 2014-09-25 - Modified: 2025-03-19 - URL: https://kb.mailster.co/how-do-i-know-if-my-cron-is-working-correctly/ - Categories: Troubleshoot, Settings - Tags: cron Mailster requires a cron to send its campaign. If you know how to set up a cron you have to check if the cron is running correctly. (more... ) --- ### Why do some of my subscribers get a status of "error"? - Published: 2014-09-10 - Modified: 2025-03-03 - URL: https://kb.mailster.co/why-do-some-of-my-subscribers-get-a-status-of-error/ - Categories: Troubleshoot - Tags: error If you're sending your campaigns you'll get sometimes subscribers marked as error (more... ) --- ### How colors work with the Mailster Editor? - Published: 2014-09-09 - Modified: 2025-02-10 - URL: https://kb.mailster.co/how-colors-work-with-the-mailster-editor/ - Categories: General - Tags: color, editor Colors in the Mailster Editor depend on the currently used template. Mailster scans the raw HTML and groups the same colors together. This works only for 6-digit hex colors like #FFFFFF If you're using the short version #FFF Mailster will ignore this color and they cannot get changed via the options panel. Merging Colors If you use the same color for different parts in your template and save it Mailster will only recognize a single color. So changing the background color to #FFFFFF and the text color to #FFFFFF Mailster will not be able to separate them anymore. To prevent that just use slightly different colors like #FFFFFF and #FFFFFE. --- ### Why does the unsubscribe link not work? - Published: 2014-09-04 - Modified: 2025-01-26 - URL: https://kb.mailster.co/why-does-the-unsubscribe-link-not-work/ - Categories: Troubleshoot - Tags: links, permalinks In some rare cases, the generated unsubscribe link in your campaigns ends in a "404 - Not Found" page. The same can happen for the confirm, profile link, and sometimes for every link that uses the tracking feature. (more... ) --- ### How can I send newsletters via GoDaddy? - Published: 2014-05-14 - Modified: 2025-01-26 - URL: https://kb.mailster.co/how-can-i-send-newsletters-via-godaddy/ - Categories: Troubleshoot, Settings - Tags: godaddy, smtp Although it's not recommended to use GoDaddy's own email servers you can do it but have to follow some rules: GoDaddy has a limit of 250 emails from a certain account so make sure you set up the sending limits correctly. Use this form to calculate your values. You have to make sure the used from and reply-to address matches your domain. On the delivery tab choose "SMTP" and insert the following: Server: relay-hosting. secureserver. net Port: 25 Timeout: 10 Secure Connection: none SMTP Auth: none Username and Password: empty There are also some limitations you may be aware of. --- ### How can I add a captcha to the sign up form? - Published: 2014-04-04 - Modified: 2025-03-18 - URL: https://kb.mailster.co/how-can-i-add-a-captcha-to-the-sign-up-form/ - Categories: Customization, Extensions - Tags: captcha, form Currently are two free plugins available: Mailster Cool Captcha for Forms Mailster reCaptcha™ for Forms You can find them on the WordPress Plugin repo. --- ### How can I setup the newsletter homepage (legacy)? - Published: 2014-01-15 - Modified: 2025-03-19 - URL: https://kb.mailster.co/how-can-i-setup-the-newsletter-homepage-legacy/ - Categories: General, Getting Started - Tags: frontend, homepage, legacy There's a newer version available of this article. The newsletter homepage is a static page that is required to make the subscription and unsubscription progress work correctly. If you activate Mailster you'll get asked to create the newsletter homepage during the setup process. By default, it's called "Newsletter" and can be accessed via (more... ) --- ### SMTP Error: Could not authenticate - Published: 2013-12-11 - Modified: 2025-03-10 - URL: https://kb.mailster.co/smtp-error-could-not-authenticate/ - Categories: Troubleshoot - Tags: delivery, smtp In some cases your campaign pauses or you are even not able to send emails at all cause of this error: SMTP Error: Could not authenticate. Your credentials are incorrect - double-check them! One of your used email addresses is not permitted to use => Use the one you use to authenticate. You probably have reached the sending limits of your provider => Ask your provider or change your delivery method. You are not allowed to send via SMTP => change your delivery method. Some ports are blocked by your provider => Check your ports. You can also try to pause your campaign and resume it after a while if it's a temporary problem. --- ### Can I add attachments to my newsletter? - Published: 2013-12-09 - Modified: 2025-01-26 - URL: https://kb.mailster.co/can-i-add-attachments-to-my-newsletter/ - Categories: General - Tags: attachment You can add attachments to your campaigns by using the attachment meta box on the campaign edit screen. You can add any attachment you can upload to your site with a maximum total size of 1MB. You can alter the limit by using this filter hook: add_filter( 'mailster_attachments_max_filesize', function { // Return 5MB return 1024 * 1024 * 5; } ); Keep in mind that attachments can significantly increase your email size and some hosts may reject your mailings. You should also consider sending a link where subscribers can download your files. --- ### Why I can't save templates or other files? - Published: 2013-12-04 - Modified: 2025-01-26 - URL: https://kb.mailster.co/why-i-cant-save-templates-or-other-files/ - Categories: Troubleshoot - Tags: filepermission, filesystem, fsdirect When you’re working with WordPress plugins like Mailster, a common frustration is encountering issues with saving templates or other files. Whether you're a seasoned WordPress user or just getting started, these types of errors can be confusing and disruptive. Here's a comprehensive guide to help you troubleshoot and resolve the issue. (more... ) --- ### Why do I get this parse error? - Published: 2013-11-24 - Modified: 2025-01-26 - URL: https://kb.mailster.co/why-do-i-get-this-parse-error/ - Categories: Troubleshoot - Tags: error, parseerror In some rare cases, Mailster shows this error after an Ajax request doesn't respond to a valid JSON: parsererror 200: SyntaxError: JSON. parse: unexpected character This error is often caused by third-party plugins or some unexpected server outputs. Please open the developer console to see the problem with this error. --- ### How can I open the browsers console? - Published: 2013-11-24 - Modified: 2025-01-26 - URL: https://kb.mailster.co/how-can-i-open-the-browsers-console/ - Categories: Troubleshoot, General - Tags: console, error The Browser Console contains important information on Errors. While most of the errors shown are JavaScript-related related some server-related information can get displayed as well. (more... ) --- ### Why I'm not able to connect to bounce server? - Published: 2013-11-22 - Modified: 2025-02-03 - URL: https://kb.mailster.co/why-im-not-able-to-connect-to-bounce-server/ - Categories: Troubleshoot - Tags: bounce, ports If you set up a bounce server you have to enter a port. Normally 110 or 995 for SSL connections If you get an "Unable to connect to bounce server! Please check your settings" message during testing the connection your host may block connections to the given port. Please check Settings => Newsletter => System Info Page at the very bottom for open ports. --- ### Why can't I use SMTP? - Published: 2013-11-19 - Modified: 2025-03-10 - URL: https://kb.mailster.co/why-cant-i-use-smtp/ - Categories: Troubleshoot - Tags: delivery, smtp SMTP (Simple Mail Transfer Protocol) uses different ports to send emails. Sometimes your provider blocks specific ports and you're not able to send via SMTP. Some providers also allow only sending via their own SMTP server and block others completely. (more... ) --- ### Mailster is not able to access the file system - Published: 2013-11-18 - Modified: 2025-02-10 - URL: https://kb.mailster.co/mailster-is-not-able-to-access-the-file-system/ - Categories: Troubleshoot - Tags: filepermission, filesystem, fsdirect On some server configurations, Mailster isn't able to write on the file system. You have to change the file permission for WordPress or force WordPress to use the direct method by adding this line in your wp-config. php: define( 'FS_METHOD', 'direct' ); The error message can be closed (dismissed) after you have added this line. It won't show up again if everything is fine. --- ### How can I setup a cron job? - Published: 2013-11-13 - Modified: 2025-03-07 - URL: https://kb.mailster.co/how-can-i-setup-a-cron-job/ - Categories: General, Getting Started - Tags: cron, cronjob, crontab If you have problems with sending your campaigns you may not have set up your cron correctly. (more... ) --- ### What are my sending limits? - Published: 2013-11-12 - Modified: 2025-03-07 - URL: https://kb.mailster.co/what-are-my-sending-limits/ - Categories: Getting Started - Tags: limits You can define how many emails Mailster sends in a certain period so you can respect your provider's limits. (more... ) --- ### My provider doesn't allow sending bulk mails - Published: 2013-11-10 - Modified: 2025-01-26 - URL: https://kb.mailster.co/my-provider-doesnt-allow-sending-bulk-mails/ - Categories: Troubleshoot - Tags: delivery Your provider doesn't allow you to send bulk mail or even block outgoing mail completely. You can always use a dedicated email provider: SendGrid Mandrill Amazon SES SparkPost If Mailster doesn't come with a dedicate add-on for your email provider you can always fall back to SMTP. Please check out the free plugins for available delivery methods on the WordPress repo. --- ### How can I update to the latest version? - Published: 2013-11-10 - Modified: 2025-02-10 - URL: https://kb.mailster.co/how-can-i-update-to-the-latest-version/ - Categories: Troubleshoot - Tags: update The easiest way to update Mailster is like a regular WordPress plugin from the repo. Just visit the Updates page of your WordPress site and update the plugin. If you have "automatic update" enabled in the settings Mailster will get updated automatically. Update the plugin from the Accounts page Once you log into your Freemius account here you can head over to "Downloads" and click th button next to the Mailster plugin. Updating via Composer You can use Composer to install the plugin. Click on the "Composer" button next to the download button to get an install on how to set this up. Update the plugin from Envato If you have bought Mailster via Envato you get 6 months of automatic updates with your Envato license. This means after 6 months you either have to upgrade to one of our plans or upload the package manually. Head over to the download section and find the Mailster Newsletter plugin. Click on "Download" and choose "Installable WordPress file only". Next, go to the plugin section of your site and click on "Plugins" => Add New and click on "Upload Plugin". Once the plugin is updated you will get asked if you like to replace the existing one. Click on "Replace current with uploaded" to continue. That's all! You have successfully replaced the existing version on your site. Enable automatic updates To enable automatic updates you have to upgrade your license. If you have a "Legacy License" you will have 6 months of... --- ### How can I increase my memory limit? - Published: 2013-11-10 - Modified: 2025-01-26 - URL: https://kb.mailster.co/how-can-i-increase-my-memory-limit/ - Categories: Troubleshoot - Tags: memory limit If you get a PHP error like "Allowed memory size of xxx bytes exhausted" you have to increase your memory limit. Increasing the PHP memory limit is a common task for WordPress users, especially when encountering errors or performance issues due to insufficient memory allocation. This article provides a comprehensive guide on how to increase the PHP memory limit in a WordPress environment. (more... ) --- ### The latest cronjob hasn't been finished - Published: 2013-11-10 - Modified: 2025-01-26 - URL: https://kb.mailster.co/the-latest-cronjob-hasnt-been-finished/ - Categories: Troubleshoot - Tags: cron, memory limit, timeout Sometimes sending emails can take longer than expected. This can cause a server timeout and wrong statistics in some cases. You'll get a notification in this case: Also if you're on the cron. php page you get this: If this is a temporary problem and the notification box vanishes by itself you can ignore it but should consider the following things if it happens regularly : Increase your server's memory limit Decrease the emails sent at once at Settings => Newsletter => Delivery You can also calculate your sending limits. --- ### What is the CAN-SPAM act and do my newsletters have to comply? - Published: 2013-11-10 - Modified: 2025-01-26 - URL: https://kb.mailster.co/what-is-the-can-spam-act-and-do-my-newsletters-have-to-comply/ - Categories: General - Tags: can-spam, spam The CAN-SPAM Act of 2003 (15 U. S. C. 7701, et seq. , Public Law No. 108-187, was S. 877 of the 108th United States Congress), signed into law by President George W. Bush on December 16, 2003, establishes the United States' first national standards for the sending of commercial e-mail and requires the Federal Trade Commission (FTC) to enforce its provisions. from Wikipedia (more... ) --- ### How can I prevent that my campaigns went in spam folder? - Published: 2013-11-10 - Modified: 2025-03-03 - URL: https://kb.mailster.co/how-can-i-prevent-that-my-campaigns-went-in-spam-folder/ - Categories: Troubleshoot - Tags: spam The best way to avoid Spam filters when sending email campaigns: Run a spam score test. Don't send with your shared host server, use a dedicated ESP instead. Choose your delivery method. Authenticate your emails by setting up DKIM and SPF for your emails. Ask users to add their email addresses to the address book or a whitelist. Check your subject line/text and avoid words that are used in spam emails. Never send to subscribers who didn't sign up for your newsletter. Also, make sure you follow your local legal guidelines. Run a Precheck Mailster has a built-in option to run a precheck on your campaign which gives you a good overview of what you can improve. Mailster has a built-in Precheck feature An excellent service that gives even better information is mail-tester. com. Run a test by sending the email provided by this service and wait for the result. Don't send with your shared host server, use a dedicated ESP instead If your website is hosted on a shared server many other users are also hosted on the same server with the same IP address. If others send emails through this server and their emails get marked as spam your emails also get marked as spam more easily. This happens because the IP address of your server gets listed on blacklists. To prevent this go with a private server or send your emails from a dedicated server. Even better is to use a professional service as explained here. Authenticate your outgoing... --- ### Mailster doesn't work with [third party plugin] - Published: 2013-11-10 - Modified: 2025-01-26 - URL: https://kb.mailster.co/mailster-doesnt-work-with-a-third-party-plugin/ - Categories: Troubleshoot - Tags: third party plugin We do our best to keep Mailster working best with the most common plugins by following the WordPress Coding Standards but sometimes Mailster or a third-party plugin breaks caused by the other. (more... ) --- ### How can I customize the notification template? - Published: 2013-11-10 - Modified: 2025-02-03 - URL: https://kb.mailster.co/how-can-i-customize-the-notification-template/ - Categories: Customization - Tags: notification template, template Mailster uses the notification template file of your template to send certain emails. You can change this template with the campaign editor. (more... ) --- ### How do I export my subscribers? - Published: 2013-11-08 - Modified: 2025-03-19 - URL: https://kb.mailster.co/how-do-i-export-my-subscribers/ - Categories: General - Tags: export You can export your subscribers on the "Manage Subscribers" page. (more... ) --- ### Why are my auto responders not getting send? - Published: 2013-11-07 - Modified: 2025-02-03 - URL: https://kb.mailster.co/why-are-my-auto-responders-not-getting-send/ - Categories: Troubleshoot - Tags: autoresponder To set up your custom autoresponder can take some time and even then you may have trouble getting things going. Please check the following points if you have troubles with your autoresponders: (more... ) --- ### Changelog - Published: 2013-11-07 - Modified: 2025-03-10 - URL: https://kb.mailster.co/changelog/ - Categories: Developer - Tags: changelog Version 4. 1. 10 2025-03-10 fixed: improve capabilities and permissions system updated Dependencies and Package Versions chore: update commit message guidelines updated: improve form block error handling updated: refactor homepage block edit and inspector controls Version 4. 1. 9 2013-02-10 fixed: missing capability to delete campaigns in some case fixed: missing key in array function added: new capabilities delete_private_newsletters, delete_published_newsletters improved: alignment of elements in the automation inspector improved: use ToggleGroupControl on update custom field action for checkboxes package upgrades Version 4. 1. 8 2025-01-07 fixed: bug when subscribe on multiple lists. 'wpdb->delete' may return 0 so do better checks removed redundant shortcode updated packages Version 4. 1. 7 2024-12-17 fixed: issue where activating caused a fatal error if wp_mail is used by another plugin fixed: typo updated: Freemius SDK to 2. 10. 1 Version 4. 1. 6 2024-11-27 fixed: campaigns cache were not cleared on status change fixed: condition using "have" and "doesn't have" tags returned wrong results fixed: force boolean on some expressions added: '__nextHasNoMarginBottom' to components to prevent deprecated messages in WP 6. 7 removed: option to upgrade license from notification updated: dependencies for composer and npm Less use of constant MAILSTER_BUILT Version 4. 1. 5 2024-11-11 improved: admin notices improvements improved: show "0" values on subscriber details page instead of nothing improved: convert license screen improved: option to quickly remove filter from subscriber overview added: {second} tag to display the current second fixed: minor CSS issues fixed: PHP Notice while Autoresponder converting fixed: Trigger selector break blocks if connection is to slow fixed: cache wasn't cleared for block forms in some... --- ### Why my campaigns do not get sent? - Published: 2013-11-07 - Modified: 2025-01-26 - URL: https://kb.mailster.co/why-my-campaigns-do-not-get-sent/ - Categories: Troubleshoot - Tags: campaign, cron, delivery, memory limit If you have created your campaign and it's ready to get sent you probably see no progress and no mail gets sent. (more... ) --- ### Why I get a "Could not execute:/usr/sbin/sendmail" error message? - Published: 2013-11-07 - Modified: 2025-03-19 - URL: https://kb.mailster.co/why-i-get-a-could-not-execute-usr-sbin-sendmail-error-message/ - Categories: Troubleshoot - Tags: delivery, sendmail, simple Sendmail is a mail transfer client which is used by many providers. (more... ) --- ### Where's my purchase code? - Published: 2013-11-07 - Modified: 2025-02-03 - URL: https://kb.mailster.co/where-is-my-purchasecode/ - Categories: General - Tags: license, purchase code If you bought the plugin via the Envato Marketplace you can find your license code (purchase code) in the download section at "Download". Click on your Username on the top right and go to "Downloads". Search for the "Mailster Newsletter Plugin" and click on the "Download" dropdown. Find the purchase code by clicking on one of the License certificate links. Licenses you have bought on our website. If you bought directly from our website (recommended) you can manage your licenses here. ---