2. In the E-mail Manager section, click on E-mail Accounts or type E-mail Accounts in the navigation filter box, and the option will appear. Click on it.
3. Under the Email Account list, the email address appears with a plus icon on the right side.
4. Click the Plus icon and choose Change Limits.
5. Modify the E-mail Quota field as per your requirement. If you have the unlimited option available, choose it instead.
6. Click on Save.
Your email quota limit will be modified.