NOTE
Removing/Deleting Email accounts will delete all emails on this account also and they will be unrecoverable without restoring from a backup.
1. Log in to your cPanel Account.
2. Head to the ‘Email'‘ section and click on 'Email Accounts':
3. To delete a mail account, simply click on the 'Manage' button next to the account you wish to delete:
4: On the 'Manage' screen scroll to the bottom of the page and select "Delete Email Account":