Postfix Alternatives for Linux

There are many alternatives to Postfix for Linux if you are looking for a replacement. The best Linux alternative is Mailpit, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to Postfix and many of them are available for Linux so hopefully you can find a suitable replacement. Other interesting Linux alternatives to Postfix are Stalwart, MailHog, Exim and OpenSMTPD.

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Get a badge for your sitePostfix alternatives page was last updated Jun 14, 2024

Mailpit
4 likes
An email and SMTP testing tool with API for developers.
37 Mailpit alternatives
Cost / License
Free
Open Source (MIT)
Origin
Germany
EU
Platforms
Mac
Windows
Linux
Germany
EU
Good alternative?Is Mailpit a good alternative to Postfix?
Stalwart
4 likes
Stalwart is an open-core mail server solution with JMAP, IMAP4, POP3, and SMTP support and a wide range of modern features. It is written in Rust and designed to be secure, fast, robust and scalable.
6 Stalwart alternatives
Cost / License
Freemium
Open Source (AGPL-3.0)
Application type
Mail Server
Origin
United States
Platforms
Self-Hosted
Docker
Linux
Windows
Mac
United States
Good alternative?Is Stalwart a good alternative to Postfix?
MailHog
8 likes
MailHog is an email testing tool inspired by MailCatcher, but easier to install.
Cost / License
Free
Open Source
Alerts
Discontinued
Platforms
Mac
Windows
Linux
Docker
Good alternative?Is MailHog a good alternative to Postfix?

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1comment
Discontinued
The last version (1.0.1) is from August 2020, and the project is unmaintained. https://github.com/mailhog/MailHog/issues/442
MailHog vs Postfix Comments
Negative comment by Guest · May 9, 2021
Mailhog is for testing if another application can send mails.

Postfix is for sending and receiving mails.
1 of 1 comments
MailHog is Free and Open SourcePostfix is also Free and Open Source
Exim
11 likes
Exim is a message transfer agent (MTA) developed at the University of Cambridge for use on Unix systems connected to the Internet.
Cost / License
Free
Open Source
Application type
Mail Server
Origin
International
Platforms
Mac
Linux
Good alternative?Is Exim a good alternative to Postfix?
OpenSMTPD
6 likes
OpenSMTPD is a FREE implementation of the server-side SMTP protocol as defined by RFC 5321, with some additional standard extensions. It allows ordinary machines to exchange e-mails with other systems speaking the SMTP protocol.
Cost / License
Free
Open Source
Platforms
Linux
BSD
Self-Hosted
Good alternative?Is OpenSMTPD a good alternative to Postfix?
Sendmail
4 likes
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.
26 Sendmail alternatives
Cost / License
Free
Open Source
Application type
Mail Server
Origin
United States
Platforms
Mac
Linux
United States
Good alternative?Is Sendmail a good alternative to Postfix?
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sSMTP
3 likes
sSMTP is a simple MTA to deliver mail from a computer to a mail server. sSMTP is simple and lightweight, there are no daemons or anything hogging up CPU; Just sSMTP. Unlike Exim4, sSMTP does not receive mail, expand aliases, or manage a queue.
Cost / License
Free
Open Source (GPL-2.0)
Alerts
Discontinued
Platforms
Linux
S
Good alternative?Is sSMTP a good alternative to Postfix?
Courier-MTA
7 likes
The Courier mail transfer agent (MTA) is an integrated mail/groupware server based on open commodity protocols, such as ESMTP, IMAP, POP3, LDAP, SSL, and HTTP. Courier provides ESMTP, IMAP, POP3, webmail, and mailing list services within a single, consistent, framework.
Cost / License
Free
Open Source
Application type
Mail Server
Platforms
Mac
Linux
BSD
Self-Hosted
Good alternative?Is Courier-MTA a good alternative to Postfix?
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D
Dragonfly Mail Agent
3 likes
A small Mail Transport Agent (MTA), designed for home and office use. Part of DragonFly BSD , it accepts mails from locally installed Mail User Agents (MUA) and delivers the mails either locally or to a remote destination.
Cost / License
Free
Open Source
Origin
Germany
EU
Platforms
Linux
BSD
D
Good alternative?Is Dragonfly Mail Agent a good alternative to Postfix?
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M
msmtp
3 likes
In the default mode, it transmits a mail to an SMTP server (for example at a free mail provider) which takes care of further delivery.
Cost / License
Free
Open Source
Platforms
Linux
Xfce
M
Good alternative?Is msmtp a good alternative to Postfix?
MailerQ
4 likes
MailerQ is a high performance Mail Transfer Agent (MTA) and a very fast SMTP server, designed to deliver large volumes of email messages at very high speeds. MailerQ is based on RabbitMQ AMQP.
Cost / License
Paid
Proprietary
Origin
Netherlands
EU
Platforms
Linux
Netherlands
EU
Good alternative?Is MailerQ a good alternative to Postfix?
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Inbucket
1 like
Inbucket is an email testing application; it will accept messages for any email address and make them available to view via a web interface.
Cost / License
Free
Open Source (MIT)
Platforms
Mac
Windows
Linux
I
Good alternative?Is Inbucket a good alternative to Postfix?

12 of 20 Postfix alternatives