AA Mail Server
- Database-based server for Win2000/WinXP/Win2003 includes features of SMTP/POP3/SMTP Auth, ISP mailboxes binding, anti-spam, email monitoring, and UTF-8 web mail. Features, FAQ, Screenshot and Downloads. [Commercial, trial version]
- http://www.aamailsoft.com/

Project Cyrus
- An IMAP server developed at Carnegie Mellon University. (C, Perl) [GNU/Linux, Unix]
- http://cyrusimap.web.cmu.edu//

Dovecot
- Secure IMAP and POP3 server. Download, mailing list archives, documentation, and details of bug reports.
- http://www.dovecot.org/

Atmail
- A perl-based feature-rich web email system supporting access via web, WAP, POP3 or IMAP. Fully customizable, with web-admin, scheduler, migration scripts and Unix/Windows technical support.
- http://atmail.com/

Rockliffe
- Offer secure SMTP, POP, IMAP, web, and wireless email software for service providers and businesses. [WinNT/2000]
- http://www.rockliffe.com/

SocketMail
- Mail server on Windows with SMTP, POP3 and web messaging. 30 days trial download available.
- http://www.socketmail.com/

W2K Mail Server
- Trial downloads, news, articles and reviews for Windows NT and 2000 products.
- http://www.w2kmailserver.com/main/

WebEasyMail
- Supportsa numerous standard protocols and services, has virus protection, and other securitz support. [NT/2000/XP]
- http://www.winwebmail.net/

1st Class Mail Server 4.x
- Commercial mailserver with unlimited domains, mailboxes and mailing lists, graphical administration tool.
- http://www.1cis.com/download/1cismail.asp

Eudora Freeware
- Includes Eudora Email, Internet Mail Server (EIMS) v1.x and a POP3 server for Unix (Qpopper).
- http://eudora.qualcomm.com/free/

Openwave
- Email server software for medium to large ISPs and telecommunication providers.
- http://www.openwave.com/us/products/

Netscape Messaging Server
- Shows its implementation, features, data sheet, FAQ, evaluation guide, and download.
- http://wp.netscape.com/messaging/v3.5/

Mailtraq
- Comprehensive e-mail SMTP/POP3 and proxy server, with a mailing list server and intuitive WebMail service. Includes dialup manager, user accounting and content barring.
- http://www.mailtraq.com/612/

iWayMail
- Developed for schools and school districts. Has centralized maintenance, building level administration, spam filtering, and web mail access.
- http://www.iwaymail.com/iwaymail_index.html

SL Mail Pro
- Web-based POP3 and SMTP email server software for Windows NT/2000 with 14-day free trial.
- http://www.seattlelab.com/products/slmailpro/

VisNetic Mail Server
- Email server supporting POP3, SMTP and IMAP and mailing list services, account control and web mail. [Windows]
- http://www.visneticmailserver.com/

IceWarp Mail Server
- Integrates SSL secured email (SMTP/POP3/IMAP4) with antispam and antivirus, webmail access, instant messaging, voice, groupware, FTP and web server. For Windows and Linux.
- http://www.icewarp.com/

inFusion Mail Server
- Uses ColdFusion, iHTML or Active State Perl to control mail delivery. [Win95/98/NT/2000]
- http://www.coolfusion.com/products/ims/

hMailServer
- Has webmail, support for virtual domains, anti virus scanning, and distribution lists. Includes features, screenshots, download, forum and documents. [Windows NT/2000/XP]
- http://www.hmailserver.com/

CommuniGate Pro
- Features multi-domain support, mailbox accounts with protection mechanisms enabling access to POP3/IMAP4 mail clients.
- http://www.stalker.com/CommuniGatePro/

CMail
- Enables to send and receive e-mails across the Internet and within LAN. Includes variability of features, screenshots, technical documents, OEM information, and awards. [Win 95/98/NT/Me/2000/XP]
- http://www.computalynx.net/software/cmail/

Binc IMAP
- GPL licensed IMAP4rev1 server for Maildir, written in C++. It strives to be stable, fast, flexible, and RFC compliant.
- http://bincimap.org/

Postal Engine
- Features e-mail products to enable organizations to use standards compliant components to reduce downtime, and increase performance.
- http://www.postalengine.com/

Ability Mail Server
- Has help, configuration and tips section. Supports SMTP, POP3, IMAP4, and WebMail and features remote administration and virus protection. [Windows 98, Me, NT, 2000, XP and 2003]
- http://www.code-crafters.com/abilitymailserver/

Intellipeer
- Has built-in anti-spam technology, and supports groups and mailing lists. Includes installation procedure, customization, support, and downloads. [Win 2000/XP/2003]
- http://www.intellipeer.com/

TekGuard
- Free SMTP mail server and optional MS Outlook PlugIn with C# source code. Receive, filter, identify and eliminate incoming spam mail.
- http://www.tekguard.com/

PostConf
- A web-based, email server and gateway. Includes a documentation, support and demo.
- http://www.postconf.com/

Courier mail server
- An SMTP/IMAP/POP3 and webmail server with extensions for mailing list management and spam filtering. [GNU/Linux, Unix]
- http://www.courier-mta.org

Smail-3
- Accepts mail messages from local files or remote hosts by SMTP or UUCP, and delivers them to remote hosts or to files or programs on the local machine. Includes features, release information, and support. [Unix]
- http://www.weird.com/~woods/projects/smail.html

Magic Mail Server
- A complete installation of all features for Mail Server for the ISP and business market. Includes support for anti-spam techniques, virus scanning, management and user interfaces.
- http://magicmail.linuxmagic.com/

The Newman Group
- Offers integrated email messaging management solutions.
- http://www.nofailemail.net/

Isode M-Switch
- A high performance SMTP message switch. Includes internet messaging, POP3, anti-virus and anti-spam solutions.
- http://www.isode.com/products/m-switch-overview.html

Mail Master
- Designed for unlimited users with integrated anti-virus, user configurable spam-filter, web mail interface, disk quotas, POP3, IMAP, and multi-level management.
- http://www.linuxmailmanager.com/

CapeSoft Email Server
- Features easy to use control over email domains, mailboxes and aliases for small or medium businesses and home environments. Has history and installation and configuration help. [Windows]
- http://www.capesoft.com/utilities/emailserver/emailserver.htm

wodMailServer
- A set of components to create standalone full mail server system on a network. Contains Pop3Server, ImapServer, SmtpServer and Mailbox components.
- http://www.weonlydo.com/index.asp?showform=MailServer

DAWKCo Software
- Includes POP3 Server and e-mail routing services, webmail extension for IIS SMTP server, and administration tools.
- http://www.dawkco.com/software/

SOHO Mail Server
- A free small office/home office SMTP/POP3 mail server for Windows with dial-up support and flexible routing rules.
- http://www.sohoserver.co.uk

IISPop
- A POP3 only server, designed to be paired with the SMTP server bundled in Windows 2000/IIS 5. Has support, discussion, and download.
- http://www.curtiscomp.com/iispop

popa3d
- A tiny Unix POP3 server with security as its primary design goal.
- http://www.openwall.com/popa3d/

INweb Mail Server
- A POP3/SMTP mail server providing features for small and large businesses, and ISPs. Includes an installation and configuration guide, trial version download, and a list of features.
- http://www.inwebmail.com/

MailEnable
- Provides details of three different editions of scalable hosted messaging platform for Microsoft Windows.
- http://www.mailenable.com/

Burrotech - Office Mail
- Free POP and SMTP server including aliases, auto-dialling, and internal routing. [Win]
- http://www.burrotech.com/officemail.php

PostMaster Email Server
- Explains benefits, requirements, downloads for LAN users.
- http://www.postmasteremailserver.com

MDaemon
- Scalable Windows email server with built-in spam blocking, content and antivirus filtering. Includes full mailing list functions, remote administration and support for browser based mail clients.
- http://www.ccsoftware.ca/mdaemon

QwikMail SMTP
- Designed to be a fast, secure, and efficient, simple to configure and maintain. Declares no internal mailer. [Linux]
- http://qwikmail.sourceforge.net/smtpd/

eXtremail
- Supports SMTP/POP3/IMAP4 mail protocols. Includes news, history, mailing lists, messageboard, downloads, and FAQ. [Linux]
- http://www.extremail.com/

NT Mail Server Seattle Lab Software Review
- Comprehensive real user review of their mail server and list server software.
- http://nt-mail-server.dallastexas.net/

Mailgate Ltd
- Features mail and proxy server, POP3 collection for SMTP only servers for small to medium sized businesses.
- http://www.mailgate.com/

Kerio MailServer
- A secure email server with webmail, anti-virus and anti-spam protection, allowing to collaborate via email, shared contacts, calendars and tasks.
- http://www.kerio.com/kms_home.html

Nexorplore
- A high capacity, multi-protocol message server management and security features.
- http://www.nexor.com/messaging_products.asp

Alt-N Technologies
- Developers of the MDaemon email server software, including Outlook connector, antivirus functionality and fax server. [Windows]
- http://www.altn.com/

XMail
- Includes free download, full documentation, mailing list, and forum. [Linux, Solaris, Windows NT]
- http://www.xmailserver.org/

Teapop
- Open source POP3 solution. Free download, documentation, FAQ. [Unix source/RPM]
- http://www.toontown.org/teapop/

WZI Consulting: Custom Mail Delivery Solutions
- Includes chapters on how mail is delivered, fetchmail configuration, fixed IP solutions, sendmail ETRN command, batched SMTP solutions, setting up and testing UUCP.
- http://www.wizzy.com/wizzy/mail.html

Mercury Mail Transport System
- A free fully RFC-compliant server for Intel platforms. Includes POP3, SMTP, IMAP modules, advanced filtering, advanced mailing-list hosting. [Netware, Win95/98/NT/2000]
- http://www.pmail.com/overviews/ovw_mercury.htm

Interchange Email Server
- A server-based application integrating with any e-mail system, or a mixed environment containing multiple protocols. Includes information about different gateways, requests, and terms. [Win95/98/NT/2000]
- http://www.ssimail.com/Interchange.htm

netMailshar
- Features SMTP/POP3 mail server with auto-dialer, advanced scheduler, autoresponder, message viewer, and email forwarding.
- http://www.pppindia.com/intl/netmailshar/

Sugarsoft Mail Server
- A standard SMTP/POP3 server for Windows 95/98/NT with unlimited domains and mailboxes. Features dial-up, mail lists, auto reply, and anti spamming. Uses clean ASCII files.
- http://www.sugarsoft.com/

IMail Server
- An SMTP/POP3/IMAP4/LDAP mail server with web interface for messaging and administration. Has anti-spam and anti-virus features. [Windows NT]
- http://www.ipswitch.com/products/imail_server/

VPOP3
- An Internet e-mail server and gateway for small, and medium sized businesses. Has an overview, features, screenshots, prices, download and requirements. [Win95/98/Me/NT/2000]
- http://www.pscs.co.uk/products/vpop3/

MIO Mail Server
- Large scalable mail server with a calendar, address books, groups, and SyncML synchronization using standard protocols.
- http://www.mobicosoft.com/ensite/mio-mail.html

IA eMailServer
- Supports mailing list, infoserver, robot and group mailbox features, and has spam control. Includes downloads, rewards, and requirements.
- http://www.tnsoft.com/

PostFix
- Open source email server for Unix, IBM Public license.
- http://www.postfix.org/

Advox Omnigate 6
- Combines an e-mail gateway, sms and POP3 server. Includes news, datasheets and overview of products and services.
- http://www.advox.se/

Exim
- Includes a current version download section, mailing lists, documentation and FAQs, website credits, and Y2K information.
- http://www.exim.org

Eudora WorldMail Server
- Includes questions, updaters, and features. [Windows]
- http://www.eudora.com/worldmail/