SpamJudge is the anti-spam program, which is very simple in using. If you use POP3 mail client and you're bothered of a lot of spam, then SpamJudge - it's what you need. It automatically will define all mail you get is it a spam or not.
If you don't wont to learn a completely new antispam program, you want to use your favorite mail client – so, SpamJudge is the best decision! SpamJudge works as proxy between mail client and POP server where your incoming mail is collected. SpamJudge sits in the background waiting for a socket connection (so it uses *none* of your CPU).