All about avast 4.1 and Spamihilator: http://forum.avast.com/index.php?board=9;action=display;threadid=3413

I think the best you can do is download the version 4.5 Beta because it uses a new mail detection that will work automatically. Please, set up your email account just as avast does not exists. It will detect the pop3/smpt/imap ports and scan your messages.

Instructions here: http://forum.avast.com/index.php?board=11;action=display;threadid=8044;start=0

Can you make a try and see if it’s ok? Thanks.