Spamihilator   
http://www.spamihilator.com

Spamihilator works between your Email-Client-Software and the Internet and examines every incoming eMail. Useless spam mails (Junk) will be filtered out. This process works completely in the background. The new Learning Filter (Bayesian Filter) uses the rules of Thomas Bayes (english mathematician, 18th century) and calculates a certain Spam-Probability for every eMail. You can train this filter! So it will know your messages even better than you and continuously increase the recognition rate. In addition Spamihilator uses a Word-Filter, that searches messages for known keywords. The program runs with almost every Email-Software, such as Outlook 2000/XP/Express, Eudora, Pegasus Mail, Phoenix Mail, Opera, Mozilla, Netscape, etc... And the best: Spamihilator is absolutely free! Features: - Learning Filter ("Bayesian Filter") - Recognition Rate: more than 98% - Intelligent recognition of spam mails using keywords - Additional plugins! - List of friends, who will never be scanned for spam, and a list of blocked senders - Recycle bin, that contains all filtered messages (of course filtered mails can be restored) - Multiple users - Easy and quick installation with a setup wizard - Automatic search the Internet for new program versions - Several languages (English, German, Spanish, Danish, Portuguese, French...) - Detailed online help

Spam Nullifier   
http://www.SpamNullifier.com

Eliminate Junk E-Mail Spam, Viruses, Tojans & Spyware. Works with POP3 & IMAP. Spam Nullifier FREE Anti Spam Filter is a powerful e-mail checker programs with effective spam elimination. Discover the safe way to stop unwanted viruses & spam e-mails before they get to your computer. Can even be used as an effective privacy tool. You will find this to be the easiest, most effective way to manage your incoming e-mails like a pro in seconds. SpamNullifier is the best solution to fight the spam mails in your e-mail accounts. Filters the messages using a multiple criteria like spam words, friend list, blocked list, and state of the art algorithm rules. Your account passwords are encrypted by a powerful encryption technique, so its too difficult for any one to hack to obtain your passwords. All messages text whatever deleted or resident in the mailbox are saved in your hard drive and appears in the main window list, the reason for deletion or existence and other checking information are also stated, of course you can delete any message from the history to save your hard drive space. Log file for any checking action can be written. Supports POP3 & IMAP servers, HTTP servers like Yahoo! and Hotmial will be supported in the PRO version.

Spam Nullifier Pro   
http://www.SpamNullifier.com

Eliminate Junk E-Mail Spam, Viruses, Tojans, Spyware. Works with POP3, IMAP, HTTP servers like Yahoo! & Hotmial. This Anti Spam Filter - powerful e-mail checker programs with effective spam elimination. Discover the safe way to stop unwanted viruses & spam e-mails before they get to your PC. Can be used as an effective privacy tool. This is the easiest, most effective way to manage your incoming e-mails like a pro in seconds. Spam Nullifier pro is the best solution to fight the spam mails in your e-mail accounts. Filters the messages using a multiple criteria like spam words, friend list, blocked list, & state of the art algorithm rules. Your account passwords are encrypted by a powerful encryption technique, so its too difficult for any one to hack your passwords. All messages text whatever deleted or resident in the mailbox are saved in your hard drive and appears in the main window list, the reason for deletion or existence and other checking information are also stated.

SpamWeed Anti-Spam Filter   
http://www.spamweed.com

SpamWeed is an innovative spam filter for all POP3 email clients (Outlook, Outlook Express, Eudora, Incredimail, Pegasus Mail and others). It uses a combination of statistical classification, ID-tracking and other state-of-the-art technologies. SpamWeed can block over 95% spam instantly with almost no false positives. Emails classified as spam are placed in a quarantine area and can be safely retrieved or deleted. Auto-learning feature further increases detection accuracy by analysis of users' correspondence. The program can even neutralize all current and future email viruses. While it's powerful and intelligent, it's also very easy to install and requires almost no maintenance. Your time is precious, let SpamWeed handle all those annoying junks.

POP3 Cleaner PRO   
http://www.acmetoolz.com

A powerful manual/automatic mailbox cleaning utility with anti-spam capabilities for Windows. You can preview and delete unwanted e-mail messages directly from the mail server and retrieve the rest with your e-mail client (e.g. MS Outlook). Every message is shown with its sender's address, subject, size and the date it was received. POP3 Cleaner PRO can also run fully automated on the system tray and act as a powerful anti-spam filter. It can connect to the mail server in desired time intervals, check for the new mail (notify you on new mail arrival), apply the anti-spam rules and delete the unwanted messages directly from the mail server. You do not need to change any settings on your computers. The installation and setup is very easy. Lifetime update for free.