JSoft Mail 

JSoft Mail is a DNS email list manager, designed to handle your in-house mailing and subscription lists. Simple to use, yet powerful, but the best part is that you can download it once and use it for a lifetime.
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Mady MTA Service 

Mady MTA Service is a small and easy SMTP server. It's small, stable and fast. It can use in a small LAN or home network and provide mail deliver service for a small group of users.
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0Spam.com Express 

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.
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1st SMTP Server 

A free SMTP relay server. Allows to relay emails sent to it, directly to their destination, bypassing your provider's mail server. If you need to send large quantities of email, set up a few of these servers on different computers and let a mass mail
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WorkgroupMail Mail Server 

WorkgroupMail is a full featured mail server, which can provide any size organization with secure and dependable messaging.
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POP3 Cleaner PRO 

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).
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