Developer website: SubRosaSoft
MailGuardian is an easy-to-use SPAM blocking utility according to Ben Slaney, developer of MailGuardian. Unlike many SPAM blocking utilities - which use confusing and tedious filters setup, our approach is simple and straight forward. We ship a list of filters that match the keywords found on most commercial and pornographic eMail. MailGuardian will check your mail server and delete any SPAM eMail before they even hit your in-box. To make things even easier, you can enter your friends eMail addresses into the friends? list, ensuring that their messages aren?t mistaken for SPAM.
Mac OS X 10.2 or later