Login to your cPanel account. (Don’t know how to login to your cPanel account? Click here)
Locate and click on “Email Accounts” under the “Email” category.
Choose the email account you wish to do the changes and click “Quota”.
Once inside the email account quota options you will see Mail Quota. You can now proceed to change the quota or just click on the radio button for unlimited and click on “Save” button when you are done.
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