Why I’m 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 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 […]

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Why can’t I use 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 only via their own SMTP server and block others completely. The most common ports are 25, 993, 465, and 587 for outgoing SMTP connection. […]

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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 for WordPress or force WordPress to use the direct method by adding this line in your wp-config.php: The error message can be closed (dismissed) after you have added this line. It won’t show up again […]

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My provider doesn’t 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 dedicated email provider: 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 […]

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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 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 […]

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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 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 […]

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The latest cronjob hasn’t been finished

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 […]

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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. 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. An excellent service that gives even better information is […]

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