1st SMTP Server
602LAN SUITE Groupware
Ability Mail Server
Advanced SMTP Server
Autoroute SMTP
AXIGEN Mail Server ISP/HSP Edition
Best Mail Server
Best SMTP Server
BusinessMail Email Server + Anti Spam System
CapeSoft Email Server
CMailServer
Corporate SMTP Server
Courier Mail Server
CPOP Mail server
DEKSI Mail
Direct sender
Dynu Enterprise Server
e-Merge
Easy SMTP Server
EGO
eMill
Enterprise Mail Server
Exchange Server Toolbox
Gate-and-Way Mail
Gattaca Server
High Speed Verifier
Inet.Mail Perseus
Kerio MailServer
Kerio MailServer with integrated McAfee anti-virus
LiteMail
Local SMTP Server Pro
Macallan Mail Solution
Mady MTA Service
Magic Winmail Server
Mail Filter for ArGoSoft Mail Server Pro
Mail Server Pro
MailCarrier Mail Server
MailDetective
MailDetective for Exchange Server
MailEnable Enterprise Edition
Mailtonews
MDaemon Email Server for Windows
Merak Mail Server
MERCUR Messaging
Native POP3 Connector
NetMail-Light
Nihuo Web Log Analyzer
Ocean Mail Server
OutlookFolders
Pivo SMTP Component
PostCast Server
Proxy+
QK SMTP Server
RaidenMAILD
Recovery for Exchange Server
SmartNewZ
SMTP Server Pro
STL WebMail Server
Surgemail
The Email Server
TM-POP3 Server
VisNetic MailServer
VisualOffice
Web Essence
WinWebMail Server
XMedia EMail Backup Enterprise Server