Login to your DirectAdmin account.
In the
Email Managersection, click on theEmail Accountsicon or type “Email Accounts” in theNavigation Filterbox. the option will appear. Click it.
Under “Account”, you can see your email address along the
Plus(+)icon on the right-hand side.
Click on the
Plus(+)icon and then on theChange Password/Usernameoption.
In the
Usernamefield, modify./rename your email username.
Click on the
Savebutton.
Your email address will be renamed successfully.