Agree with Dick Laurent. You need to configure cron to work. A configured cron not only sends a newsletter, but also optimizes the database (clear unused data).
In addition, if you do not have permission to configure cron, you can send newsletters manually at the open URL:
http://yourstorename.com/index.php/admin/newsletter_queue/sending
It is important that you need to disable the "add secret key to URL" option for direct access to this action.
source
share