The current maximum mail attached is 10MB per email message. Your account may use as many emails as your plan space wise can hold. You may also need to increase your Quota limit on your email address to prevent your mailbox becoming full.
You can do this change by following the steps indicated below:
- Login to your Cpanel Account
- Click “Mail”
- Click “Add/Remove/Manage Accounts”
- You will be able to make the modifications here.