1. Log in to your Plesk Control Panel.
For example, https://www.abc.com:8443. Remember to enter port number: 8443 and use “https” and not “http”. (Replace "abc.com" with your own domain.)
2. Key in your Login and Password and then click on the “Login” button.
3. Click on the domain name which you wish to delete an email account.
4. Under the “Services” box, click on the “Mail” icon.
5. Select the email account which you wanted to delete, then click on “Remove Selected”.
6. Check on “Confirm removal” and then click “OK”.
7. The selected email account(s) will now be removed upon confirmation.