Login to your DirectAdmin account.
Email Managersection, click on the
Email Accountsicon or type “Email Accounts” in the
Navigation Filterbox and the option will appear. Click on it.
Under “Account”, you can see your email address along with the
Plus(+)on the right-hand side.
Plus(+)icon and then click on the
Email Quotafield as per your requirement. If you the
unlimitedoption available, choose
Click on the
Your email quota limit will be modified.