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. To do so you have to open the wp-config.php in your WordPress root directory and add following line define(‘WP_MEMORY_LIMIT’, ‘256M’); Some hosts doesn’t allow this changes (or it has no effect). Often it gets […]

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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: Run a spam score test. Don’t send with you shared host server, use a dedicate ESP instead. Choose your delivery method. Authenticate your emails by setting up DKIM and SPF for your mails. Ask users to add you email address to the address book or […]

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Mailster doesn’t work with [third party plugin]

We do our best to keep Mailster work best with most common plugin by following the WordPress Coding Standards but sometimes Mailster or a third party plugin breaks caused by the other. Best is to disable one of the plugins and check if the other is still not working. If so the plugin you’ve disabled isn’t […]

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Why I get a “Could not execute: /usr/sbin/sendmail” error message?

Sendmail is a mail transfer client which is used on many providers Make sure the the path “/usr/sbin/sendmail” is correct Make sure you have the permission to send with sendmail (ask provider for help). Shared hosts often disabled this function. Try a different sending method at Settings => Newsletter => Delivery Sendmail isn’t designed for […]

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