You can add additional storage to your email from within your account manager. Follow the steps below to do so:
1. Login to the Account Manager.
2. Click “My Email


3. Click “Manage” next to the email address that the storage should be added to.


4. Click “Additional Storage”.


5. You will be asked to select the amount of storage you want to add before checking out.  
6. Select your payment option and confirm the order to add the storage.