1. log in to your DirectAdmin Account.
2. In the E-mail Manager section, click on the E-mail Accounts Icon or type E-mail Accounts in the navigation filter box. The option will appear. Click on it.
3. Under Account, you can see your email address along the Plus icon on the right-hand side.
4. Click on the Plus icon and then on the Change Password/Username option.
5. In the Username field, modify/rename your email username.
6. Click on the Save button.
Your email address will be renamed successfully.