If you do not have a cron job setup, you can pick up stalled mailings in one of the following ways:
1. Go to Settings => Current Processes if the option exists. If the option exists, you have currently sending campaigns in the queue. There you can see all stalled processes and run them manually one by one.
2. Leave the admin panel open. 10 minutes after the page load, the page will send a command to the server to run the cron.php in the background. It will continue to do so every 10 minutes, so simply leaving the admin panel open should pick up your stalled mailings.
3. Go to Settings => Cron Jobs/Scheduled Tasks and run the Sending Engine task manually.
PLEASE NOTE: We strongly suggest to setup a cron job or scheduled task to run admin/cron.php every 5 minutes.
