Here’s our verdict on free and open source email servers. We recommend Exim, OpenSMTPD, mox, DBMail, WildDuck, and Stalwart.
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Tag: email server
Stalwart – all-in-one mail and collaboration server
Stalwart is a mail and collaboration server with JMAP, IMAP4, POP3, SMTP, CalDAV, CardDAV and WebDAV support and a wide range of features.
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dma – DragonFly Mail Agent
dma is a small Mail Transport Agent (MTA), designed for home and office use.
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WildDuck – opinionated email server
WildDuck is a modern mail server software for IMAP and POP3. Modern being scalable, Unicode-first, and API-controlled.
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mox – modern, secure, all-in-one email server
Mox is a modern full-featured open source secure mail server for low-maintenance self-hosted email.
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Sendmail – Mail Transport Agent
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.
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chasquid – 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.
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Citadel – groupware software
Citadel/UX (commonly known as Citadel) is an open source, complete and feature-rich collaboration suite (messaging and groupware).
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Dovecot – 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.
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