MailTalkX - 3.02 

This is an e-mail monitoring utility. Its features include audible and visual notification of incoming e-mail and log-file maintenance.

SpamBuster - 1.8 

Help get rid of junk e-mail by using SpamBuster. It filters the mail on your machine.

SpamEater Pro - 3.03 

Filter out known spammers right at the server and delete it there. This saves you download time and expensive online charges.

SpamKiller - 2.77 

Filter on the message, the text, headers, and more. A Friends list ensures that you get mail from those people you want.