Email Disk Usage
To remove messages, execute the following steps:
1 – Open cPanel (your domain/Cpanel).
2 – Click on (Email Disk Usage) from the Email section.
3-Choose an Email from the Account drop menu.
4 – Click Manage for the appropriate Mailbox.
5 – Select a delete option from the Messages to delete: menu.
6 – Click Delete Permanently.
in E-mail