@iPholy Thank you for reaching out!
Shortening/changing your Evernote Email Address ( your '@m.evernote.com' email address) is considered an administrative change for your Evernote Account.
Given the nature of this type of request, the forum users, moderators, and staff do not have access to the necessary tools to make this change for you.
However, our support staff should be able to help you make this change if you request it via a support ticket.
You can open a support tick