Postfix Alternatives for Linux

There are many alternatives to Postfix for Linux if you are looking for a replacement. The best Linux alternative is Exim, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 10 alternatives to Postfix and 18 are available for Linux so hopefully you can find a suitable replacement. Other interesting Linux alternatives to Postfix are MailHog, OpenSMTPD, Sendmail and sSMTP.

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Postfix

Free • Open Source
Mail Server

Mac
Linux

Postfix is a mail transfer agent (MTA) that routes and delivers electronic mail. It attempts to be fast, easy to...

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Exim
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Yes
No
Free • Open Source
Mail Server
Mac
Linux
16 alternatives to Exim
Exim is a message transfer agent (MTA) developed at the University of Cambridge for use on Unix systems connected to the Internet.
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Exim Features
SMTP Support
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Exim vs Postfix opinions
Most users think Exim is a great alternative to Postfix.
MailHog
Do you think this is a good alternative?
Yes
No
Free • Open Source
Mac
Windows
Linux
Docker
29 alternatives to MailHog
MailHog is an email testing tool inspired by MailCatcher, but easier to install.
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MailHog Features
1. PortableMailHog can be used from a USB stick or similar with no prior installation.
Email Forwarding
SMTP Support
MailHog vs Postfix opinions
pros, cons and recent comments
Guest
Mailhog is for testing if another application can send mails.

Postfix is for sending and receiving mails.
Negative comment•
0
OpenSMTPD
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Yes
No
Free • Open Source
Linux
BSD
Self-Hosted
12 alternatives to OpenSMTPD
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.
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OpenSMTPD Features
SMTP Support
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Sendmail
Do you think this is a good alternative?
Yes
No
Free • Open Source
Mail Server
Mac
Linux
27 alternatives to Sendmail
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.
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Sendmail Features
SMTP Support
sSMTP
Do you think this is a good alternative?
Yes
No
Free • Open Source
Linux
19 alternatives to sSMTP
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.
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sSMTP Features
Support for NodeJS
SMTP Support
Discontinued
The last update was in 2013.
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msmtp
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Yes
No
Free • Open Source
Linux
Xfce
7 alternatives to msmtp
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.
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msmtp Features
Network Tools
SMTP Support
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PowerMTA
Do you think this is a good alternative?
Yes
No
Paid • Proprietary
Mail Server
Windows
Linux
Self-Hosted
21 alternatives to PowerMTA
Email gateway application (SMTP server) that makes it easy for senders to adopt the latest authentication specifications ( SPF and DKIM) to comply with changing ISP policies for accountable outbound email delivery. No over hype. It just delivers.
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PowerMTA Features
POP3 Support
SMTP Support
Inbucket
Do you think this is a good alternative?
Yes
No
Free • Open Source
Mac
Windows
Linux
6 alternatives to Inbucket
Need to test your webapps outbound emails with Mailinator but stuck behind a firewall? Want to keep the new application you are developing secret until it’s time to release it? Need to validate that emails go out as part of your integration test suite?
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Inbucket Features
POP3 Support
SMTP Support
REST API
Courier-MTA
Do you think this is a good alternative?
Yes
No
Free • Open Source
Mail Server
Mac
Linux
BSD
Self-Hosted
12 alternatives to Courier-MTA
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.
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Courier-MTA Features
1. Mail FilteringCourier-MTA classifies email messages according to specified criteria, allowing you to automatically recognize fraudulent or spam messages.
SMTP Support
IMAP Support
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Dragonfly Mail Agent
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Yes
No
Free • Open Source
Linux
BSD
7 alternatives to Dragonfly Mail Agent
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.
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Dragonfly Mail Agent Features
SMTP Support
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