PostArmor (Mac)

PostArmor (formerly MailArmor) helps keep your electronic mailbox free of spam; it lets the legitimate messages pass through undisturbed while leaving suspect messages on the server to be re-examined later, or just deleted after a while. It works as a POP3 e-mail proxy with support for POP, APOP, and IMAP servers. It supports the SpamCop service for both reporting and querying, and other blacklist services. It has been translated in Italian, French, and Spanish.

Requirements:

Mac OS 9.0, Java 1.1.8, Swing 1.1.1

Limitations:

Checks only 1 e-mail account