How to Set Up a Cron Job
Good news! With MailPoet 3 you don't have to set up a Cron Job anymore to keep your sending queue working. We developed a new system that inside our plugin that keeps visiting your own website in the background to ensure that your newsletter queue works without any human interaction.
If your newsletters queue (that progress bar) is not moving, that means the plugin is not being able to perform a request (access/visit) to your own website. Most of the time that's a cURL issue.
To find which cURL issue is happening, please go to MailPoet's Help page and click on the System Info tab. Scroll down until you find the "Cron Ping URL" line and access the URL specified there. When opening that URL you'll see the correct error message.
If you any need further help, get in touch with our support.