Tseten a11n

These types of errors are most often caused by either missing or corrupted files, which can happen if there’s some type of glitch while updating WordPress plugins/themes and something doesn’t go as expected.
 
As a first step here, I’d recommend re-installing the plugin and then checking to see if the issue is resolved. You can remove the plugin and re-install it from your admin dashboard’s Plugins page, or alternatively we have a guide for re-installing via FTP here: Re-installing / Updating the Plugin via FTP
 
Please let me know how that goes, or if you have any questions! If you are still having issues afterwards, please let us know, and copy and paste the information from MailPoet > Help > System Info, and send that over as well. 

I see that you are looking to assign mailing lists based on user roles. While this specific feature is not available, you can accomplish similar functionality by creating automated segments and sending newsletters based on the segments. By doing so, you can target specific user groups effectively.

You can find more information on how to create automated segments and send newsletters based on the segments in the guide to subscriber segmentation here.

Hello,

I’d be happy to assist you with the issue you’re experiencing. Could you please clarify where you are seeing the white screen? Is it when adding a new post on your site in All Post > Add New or when working with the MailPoet configuration?

Additionally, can you please send us the following information:

• A screenshot of the MailPoet > Help > System Status page. Please ensure to capture the whole page or make several screenshots.
• Copy and paste the information from MailPoet > Help > System Info.

If you don’t already have a screenshot service installed, here are a few options:

• https://snipboard.io
• http://skitch.com/
• http://getcloudapp.com/
• http://awesomescreenshot.com/ There is also a walkthrough guide here: https://en.support.wordpress.com/make-a-screenshot/.

We have seen one other report of this error on a user’s site, and in that case it appears to have been caused by an issue with the database either being corrupted, or by the database table never having been created in the first place.

For that user, they informed us that they reached out to their hosting who helped them to recreate the database, and then import the data from the old database, which resolved the error for them.  Please check with your hosting to see if something may have caused the database not to be created (they may have error logs that could explain what happened).

You could also try deleting all tables in the database starting with _mailpoet, and then reinstalling the plugin to see if it allows all tables to be created successfully.
Alternatively, I believe the “Reinstall from scratch” option under MailPoet > Settings > Advanced should also cause tables to be dropped and recreated.

Please let me know how that goes, or if you have any questions!

The wpmu_registration_enabled filter in MailPoet serves to control whether user registration is enabled in a WordPress Multisite environment. When this filter is active, it allows you to modify whether new users can register on the site.

The specific purpose of this filter is to provide flexibility in controlling user registration settings, particularly in Multisite installations where you might want to restrict or enable registration differently across various network sites.

When this filter is active, you can access and modify the following variables:

1. $registration_enabled (boolean): This variable represents whether user registration is currently enabled (true) or disabled (false).

You can hook into this filter using the add_filter() function in WordPress. The filter is active at the point where WordPress checks whether user registration is enabled, typically during the user registration process or when accessing settings related to user registration.

Here’s an example of how you can use this filter:

add_filter('wpmu_registration_enabled', 'customize_registration_enabled');

function customize_registration_enabled($registration_enabled) {
    // Modify the $registration_enabled variable based on custom conditions
    if (/* Your custom condition */) {
        $registration_enabled = true; // Enable registration
    } else {
        $registration_enabled = false; // Disable registration
    }
    return $registration_enabled;
}

In this example, the customize_registration_enabled function hooks into the wpmu_registration_enabled filter and modifies the $registration_enabled variable based on custom conditions. You can adjust the conditions according to your specific requirements.

Thank you for sharing the system info. I looked into the account and don’t see any problem with it and also can confirm that the email ID projectname_ext@projects.mydomain.ext is not suppressed in our system.

Just to doubt check, this is the email address you are using to send the newsletter preview? And another question, does it work when you use a different email ID?

Thank you for sharing the system info that was helpful. I found that there might be a connection issue as the CRON ping is not working on your site. It seems to be restricted by some kind of security. I’m not sure if you have any security plugin or if your host have security setup but I recommend disabling that and see if the link: https://ldcmindset.com/?mailpoet_router&endpoint=cron_daemon&action=ping returns only pong.

If you are not sure what might be causing this, the best thing to do is perform a full conflict test to find out the cause of this problem. You can find more information in our Knowledge Base.