1)   MDaemon 9.6.5
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.
MDaemon, email server, e-mail server, Mail Server, E-mail, email messaging, windows email server, SMTP mail server, POP3, IMAP,

 2)   Winmail Mail Server 4.3
Winmail Server is an enterprise class mail server software system offering a robust feature set, including extensive security measures. Winmail Server supports SMTP, POP3, IMAP, Webmail, LDAP, multiple domains, SMTP authentication, spam protection
mail server, webmail, mail anitvirus, email server, esmtp, mail monitor, NT Mail Server, mailserver, emailserver, mail spy,

 3)   GroupWare 1.0.6
MDaemon GroupWare unlocks the collaborative functions of Microsoft Outlook using MDaemon as the mail server platform. Outlook users can share Calendar, Tasks, Contacts, Notes, and Journal folders without the expense or expertise required by Exchange.
share folders, share contacts, share calendar, share tasks, Groupware, E-mail, Email Server, Server, POP3, IMAP,

 4)   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.
Mail server, Email server, POP3, SMTP, IMAP, LDAP, WAP, web mail, web admin, instant messaging,

 5)   AXIGEN Mail Server 4.0.1
AXIGEN is a fast, reliable and secure mail server, available for Linux, FreeBSD/OpenBSD/NetBSD and Solaris providing (E)SMTP, POP3, IMAP4 and Webmail services. AXIGEN offers integrated List server, centralized Web/CLI Admin and FREE technical support.
mail server, mailserver, webmail, SMTP, IMAP, POP3, linux, mail relay, list server, discussion lists,

 6)   SnugServer 4.0
SnugServer is an Email Server, Web Server, FTP Server, NewsServer and ListServer. It's your all-in-one solution to managing your Internet Presence. Comes with Anti-Spam, Anti-Virus & SSL/TLS/S/MIME Encryption. Allows Digital Certificate creation.
email server, mail server, ftp server, listserver, web server, webserver, newsserver, ssl, tls, spam,

 7)   AXIGEN Mail Server StartUp Edition 6.1.0
AXIGEN Office Edition is a FREE mail server, providing (E)SMTP/POP3/IMAP4/Webmail services for 5 users. AXIGEN offers centralized Web/CLI Admin, Personal Organizer, Groupware, FREE support; available for Linux, FreeBSD, NetBSD, OpenBSD and Solaris.
mail server, mailserver, webmail, SMTP, IMAP, POP3, linux, mail relay, list server, groupware,

 8)   PostMaster Express 5.2
PostMaster Express has been built for organizations who are looking for pure and simple e-mail connectivity with a basic of pre-loaded rules that ensures zero maintenance, optimum resource utilisation and maximum productivity.
MailServer, PostMaster, Email, Antivirus, Antispam, E-Mail Server, Messaging Solution, Internet Communications, Corporate Mail Systems, IQuinox,

 9)   AXIGEN Mail Server for ISPs 4.0.2
AXIGEN is a secure mail server, available for Linux, for FreeBSD, OpenBSD, NetBSD and for Solaris providing integrated mail services. AXIGEN offers centralized Web/CLI Admin and FREE technical support with flexible licensing.
mail server, mailserver, webmail, SMTP, IMAP, POP3, linux, mail relay, gateway server, mail filter,

 10)   E-mail Marketing v1 .0.41
With built-in functions, this software allow delivery to almost all email accounts, public or private. It has an email list manager and dns resolution smtp server to avoid usage of external smtp provider. It's very easy to use.
mass email, email list management, smtp, email server, email list, email send, emailer, mailer, hotmail,

 11)   Emailarchitect Email Server 5.1
EmailArchitect Email Server is a fast and full-featured email server supporting the SMTP, POP3, SSL and WEBMAIL protocols, web admin, comprehensive customized spam/virus filters, global & private address books, multiple languages, SDK and more.
email server, mail server, emailarchitect, internet solutions, web mail, webmail, SSL, IMAP4, secure, anti-spam,

 12)   The Email Server 2.0.277
The Email Server is a Microsoft Windows-based SMTP and POP3 server
SMTP, POP3, Email server, mail server, windows, post office, dial-up, compress, send email, receive email,

 13)   AXIGEN Gateway Mail Server 1.1.1
AXIGEN Gateway is a secure mail relay server, available for many Linux distributions and for FreeBSD. AXIGEN uses firewall-like connection rules and is capable of integrating with most anti-virus / anti-spam applications.
mail server, mailserver, webmail, SMTP, IMAP, POP3, linux, mail relay, gateway server, mail filter,

 14)   eeMailer- Alert Notification Sender 2.20
Email sender (SMTP server) can be used by 3rd party software programs to send system alert notifications, SMS alerts, e-Commerce, security alerts, direct (bulk) mail, email notifications and alerts
email server, e-mail server, email sender, e-mail sender, e-mail, email, alert notifications, alerts, server notifications, notifications,

 15)   MailEnable Professional 1.6
MailEnable Professional Edition is a enterprise level mail server for Windows 2000/NT/XP. It supports SMTP and POP3, supports an unlimited amount of email addresses, domains, groups and mailing lists.
mail server, email server, mailenable, mail enable, e-mail, email, mail, POP, POP3, SMTP,

 16)   1PopCheck 1.0
Retrieves emails from any standard POP3 server. Allows viewing, deleting and defining rules on emails along with many other administrative features. Emails from various accounts can be checked in a single window. Costs $9.99.
1popcheck, email, email retrieval, pop3, email utility, email server, email standards, MIME 1.0, software, attachments,

 17)   MailEnable Enterprise Edition 1.1
MailEnable Enterprise Edition is designed for organisations or ISP's dealing with high volumes of mail, requiring greater control and flexibility over mail services.
mail server, email server, mailenable, mail enable, e-mail, email, mail, POP, POP3, SMTP,

 18)   EGO 3.0
EGO is a personal email server. It links your email application and recipient's mail server directly. As soon as the application finishes sending the message, the message is in the recipient's incoming mailbox.
mail server, email server, SMTP server,

 19)   CapeSoft Email Server 3.02
Email Server with free upgrades and unlimited users for $39. For small or medium businesses and home environments. Is easy to use and provides you with full control over email domains, mailboxes and aliases.
Email Server, Mail Server, EMail, POP3 Server, SMTP Server, CapeSoft,

 20)   PostMaster Enterprise 5.2
PostMaster Enterprise is meant for organisations who have gone beyond just e-mail connectivity - who are looking at optimising productivity of e-mail.
MailServer, PostMaster, Email, Antivirus, Antispam, E-Mail Server, Messaging Solution, Internet Communications, Corporate Mail Systems, IQuinox,