Knowledgebase: POP3 Server (Incoming)
What is my "master" POP3 account?
Posted by Roy Petersen on Feb-15-2007 12:16 PM
When your account is created, a master POP3 account is set-up by default. This account is username@yourdomain.com and this name cannot be changed.

In your Control Panel, you will notice that this POP3 account is "locked". While you cannot delete it, you can change the password for it at any time.