MDaemon, Windows-based email server software, contains full mail server functionality and control with a strong emphasis on security to protect your email communication needs. Security features include Greylisting, DKIM, DomainKeys, SPF, Sender ID.
Email Redemption for Outlook 1.61
Join the Internet's Spammer-Free Community - Restore Your Email Freedom! The Email Redemption Community (ERC) is a self-regulating email community, in which spammers cannot survive. As a result, ERC members enjoy open, risk-free emailing.
0Spam.com Express 1.0
The most powerful, next generation anti spam software, 0Spam.com Express is compatible with all versions of Windows and most E-mail clients, safely removes spam from your existing POP3, Yahoo, Hotmail, GMail, or IMAP accounts, and many cool features.
Cloudmark SafetyBar for Outlook 4.2
Cloudmark SafetyBar (formerly SpamNet), the most award-winning protection, stops over 98% of spam, fraud, phishing attacks and all email threats automatically and is the only solution to achieve zero false positives in industry reviews.
VisNetic MailServer 8.3.5
VisNetic Mail Server is a high performance mail server with an extensive, highly configurable feature set. This secure mail server is also ideal for use as a gateway mail server, features built-in anti spam, Web mail and an instant messaging server.