1)   Ad Nuker Popup Blocker & Spam Filter 4.6.0.0
Filter Junk E-Mail Spam, Ads, Pop Ups advertising, Viruses, Tojans & Spyware. Works with POP3 & IMAP. This FREE tool uses intelligent filtering of annoying Popup ads, e-mail spam, Spyware, Adware, Trojans, Viruses, Spyware Cookies and much much more

 2)   Spam Nullifier Pro 3.7.0.2
Eliminate Junk E-Mail Spam, Viruses, Tojans & Spyware. Works with POP3, IMAP, HTTP. Spam Nullifier is a powerful e-mail checker programs with effective spam elimination. This FREE Anti Spam Filter stops unwanted viruses, trojans & spam e-mails.

 3)   Anti-Spam Filter 1.2
Anti-Spam Filter is an innovative self-learning system, offering you spam protection without deleting the important correspondence. Anti-Spam Filter maintains its own collaborative spam-tracking database, which uses the signatures of spam messages.

 4)   Spam Nullifier 3.4.0.1
Eliminate Junk E-Mail Spam, Viruses, Tojans & Spyware. Works with POP3 & IMAP. Spam Nullifier is a powerful e-mail checker programs with effective spam elimination. This FREE Anti Spam Filter stops unwanted viruses, trojans & spam e-mails.

 5)   Easy Email Spam Filter 1.21
Easy Email Spam Filter is an easy to use email spam filter utility that will stop email spam from entering your Outlook inbox or Outlook Express inbox.