Sendmail is a general purpose internetwork email routing facility that supports many kinds of transfer and delivery methods, including the Simple Mail Transfer Protocol (SMTP) used for email transport over the Internet. A descendant of the delivermail program written by Eric Allman, Sendmail is a well-known project of the free and open source software and Unix communities, and has spread both as free software and proprietary software.
Zimbra Collaboration is an open, secure collaboration tool for email, calendaring, tasks and more. With the most innovative we ...
Microsoft Exchange Server is a messaging and collaborative software product developed by Microsoft. It is part of the Microsof ...
Zentyal is a native Microsoft Active Directory® implementation on Linux incorporating all the network services required in a s ...
Atmail webmail system offers a webmail client, email server platform and mailserver appliance for Linux, Unix and Windows. Fea ...
A small Mail Transport Agent (MTA), designed for home and office use. Part of DragonFly BSD , it accepts mails from locally in ...
SSMTP is a program which delivers email from a local computer to a configured mailhost (mailhub). It is not a mail server (lik ...
BulkMTA is Commercial Mail Server Similar to PowerMTA. IP Rotation, DKIM, Sender / Receiver Rate limiting
iMail - Business and School Ultimate Free Mail Solution Web-client access, LAN or WAN self-hosted server, maintenance-free des ...
Sanwhole Exchange is a server running iMail, iPress and iStore services.
iMail is an enterprise-class email server does Micros ...
The Courier mail transfer agent (MTA) is an integrated mail/groupware server based on open commodity protocols, such as ESMTP, ...
SophiMail is a fully-featured email and collaboration server, ideal for private hosting: on cloud, on premises or hybrid.
Solv ...
In the default mode, it transmits a mail to an SMTP server (for example at a free mail provider) which takes care of further d ...
Exim is a message transfer agent (MTA) developed at the University of Cambridge for use on Unix systems connected to the Inter ...
Postfix is a mail transfer agent (MTA) that routes and delivers electronic mail. It attempts to be fast, easy to administer, a ...
OpenSMTPD is a FREE implementation of the server-side SMTP protocol as defined by RFC 5321, with some additional standard exte ...