Because if I don't use the email address as the user name it doesn't work.
That is not my choice that is what the ISP uses. And YES the username does have the domain part in it, sorry but that is...

If I set up an account that only uses a username it works. If I set up an account that uses an email address i.e. joe@somedomain.com as a user name it doesn't work. Neither IMAP nor POP3 work. And...

E Mail retrieval does not work in IMAP or POP3 when you use an email address as a user name for your email account. Like I said I set up 5 accounts 4 worked fine one did not. The one that did not...

I set up 5 email accounts on the Desktop version. One was yahoo, one was gmail, one was IMAP and two were POP3. All those 4 used a user name and password. The user name was only a name NOT an email...