For any POP3 account I've ever had, all I've needed has been something like the following:
#Randymon Fetchmail config file for the Woodnotes Guide
poll mail.myisp.com with protocol pop3 user NAME
with pass PASSWORD is randymon here;
to indicate my login name, login password, and local machine account (the name I log in to my Linux box with). To get my mail, I open up a terminal and download my mail by entering the command `fetchmail.' Some distros like SUSE set up your machine so your mail is automatically downloaded every time you establish an internet connection.
When you sit down at your computer you can open up a terminal and first run fetchmail, then run mutt. Or you can start with mutt, and run fetchmail by entering:
! fetchmail
The exclamation point is the mechanism for getting to a shell from within mutt and after the exclamation point you could easily input any shell command you like (less, sort, ls, vim, etc.)