Anti-Spam Blacklist Thing lets you check to see if a given IP address or hostname is on one of up to 20 different anti-spam blacklists. Anti-Spam Blacklist Thing is provided by SpamButcher completely free of charge.
This is an antispam and antiphishing plug-in for Outlook Express. The plug-in filters POP3, IMAP accounts and deletes most of spam on the server by headers.
Easy to integrate with your favorite e-mail client, SpamRemover will save you the time and nerves of dealing with spam, leaving you with a clean and uncluttered inbox
Punish/Bounce/Report/Challenge - Get back at spammers by increasing their costs, returning their spam, and reporting them to the servers they came from and the FTC. Email a special password to an unfamiliar sender.
The #1 server-based anti-spam solution for Exchange and SMTP servers. GFI MailEssentials uses multiple spam detection filters to capture 99% of spam, while minimizing false positives. Also adds various email management tools to your server.
SPAMfighter Mail Gateway, is the easy-to-use anti-spam solution for Microsoft Windows Servers. SPAMfighter Mail Gateway delivers instant spam protection with no configuration/maintenance to help businesses get rid of spam.
Mailinfo helps you make sure your outgoing emails are not blocked as spam. Real time alerts directly to your desktop when your outgoing email is viewed and a daily reminder to follow up on any of your emails which haven't been confirmed by Mailinfo.