This article explains how to view and manage the mail queue in Plesk. Controlling the mail queue helps identify undelivered emails, resolve mail delivery issues, and maintain smooth email server operations.
Steps to follow to control the mail queue in Plesk:
- Log in to Plesk.
- Now, look for Tool & Settings, search for Mail options and choose Mail Server Settings.

- After that, go to the Mail queue tab and select Clear.

Note: If you can’t send an e-mail via your mail server, it’s possible that your mail server is overburdened and can’t handle the volume of messages it’s receiving. This might happen if someone is sending spam via your mail server or if the mail transfer agent (MTA) or mail delivery agent (MDA) (such as Postfix, Sendmail, or Exim), which is responsible for handling and delivering outgoing emails.
In such circumstances, manually entering the mail queue might assist in identifying and removing potential sources of the problem.
We hope that you now have a good understanding of how to control the mail queue in Plesk. If you continue to have problems with the protocol outlined above, please contact Webhosting UK for constructive assistance 24×7