Sendmail is a Mail Transport Agent (MTA). It is suitable for handling sophisticated mail configurations, but this means that configuration can be complex.
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qmail – modern SMTP server
qmail is an Internet Mail Transfer Agent (MTA). It was written as a more secure replacement for the popular Sendmail program.
Read morechasquid – SMTP (email) server with a focus on simplicity
chasquid is an SMTP (email) server with a focus on simplicity, security, and ease of operation. chasquid is free and open source software.
Read moreCitadel – groupware software
Citadel/UX (commonly known as Citadel) is an open source, complete and feature-rich collaboration suite (messaging and groupware).
Read moreDovecot – IMAP and POP3 email server
Dovecot is a mail server whose major goals are security and extreme reliability. It seeks to handle all error conditions and verify that all data is valid.
Read moreCyrus IMAP – email, contacts and calendar server
Cyrus IMAP is an email, contacts and calendar server intended to be run on a “sealed” server.
Read moreCourier Mail Server – mail transfer agent
The Courier mail transfer agent is an integrated mail/groupware server based on open commodity protocols, such as ESMTP, IMAP, POP3, LDAP, SSL, and HTTP.
Read morePostfix – mail transfer agent
Postfix is a free and open source mail transfer agent (MTA), a computer program for the routing and delivery of email.
Read moreZimbra – Enterprise Collaboration
Zimbra Collaboration Suite (ZCS) is a groupware product developed by Zimbra Inc. Zimbra consists of both client and server components.
Read moreDBMail – scalable sql based email services
DBmail is the name of a group of programs that enable the possibility of storing and retrieving mail messages from a database.
Read moreOpenSMTPD – daemon implementing the Simple Mail Transfer Protocol
OpenSMTPD is an implementation of the server-side SMTP protocol as defined by RFC 5321, with some additional standard extensions.
Read moreExim – message transfer agent
Exim is an open source mail transfer agent (MTA), which is software responsible for receiving, routing, and delivering e-mail messages.
Read more12 Best Free and Open Source Email Servers
Here’s our verdict on free and open source email servers. We recommend Exim and DBMail as the finest open source goodness.
Read more42 Best Free Linux Email Software
Email is arguably one of the most popular and useful functions of a Linux system. Fortunately, there is a wide selection of free email software available on the Linux platform which is stable, feature laden, and ideal for personal and business environments. Send and receive emails, run a mail server, filter spam, administer a mailing list are just some of the options explored in this article.
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