You will need to log into your web based email. To do so, you can go to your internet browser bar (not the search bar) and type in email.yourdomain.com. This will bring up your GoDaddy login page. Once you are logged in, you will need to delete any unwanted emails out of your inbox, and make sure to purge the trash. We would also recommend purging emails out of all folders (Bulk mail, send items, etc) to free up space.If this does not work for you, then we can upgrade your email to 10 emails that have unlimited space. Please contact us at mailto: email@example.com to find out pricing to upgrade your email.