POP3 (Post Office Protocol 3) email stores your email on the server to be downloaded locally by your email program or read online using our IMP Webmail program. If you don't want to use POP3 email, you can setup an email redirect to forward your email to an outside email address.
Here is how you can create a POP3 account for your domain:

Log in to your control panel.
Select the domain name that you want to apply the change to.
Click on MAIL.
Enter the mailname that you want to create (ie. "joe", not the full address).
Click on ADD.
Check the "Mailbox" box.
Enter the new password and confirm the new password.
Click on UPDATE.