Postfix AlternativesMail Servers and other similar apps like Postfix

Postfix is described as 'Mail transfer agent (MTA) that routes and delivers electronic mail. It attempts to be fast, easy to administer, and secure. The software is also known by its former names VMailer and IBM Secure Mailer' and is a Mail Server in the online services category. There are more than 25 alternatives to Postfix for a variety of platforms, including Linux, Mac, Windows, Self-Hosted and BSD apps. The best Postfix alternative is Exim, which is both free and Open Source. Other great apps like Postfix are Mail-in-a-box, KumoMTA, Mailpit and MailHog.

27

Mail Server
Free • Open Source

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

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Postfix alternatives page was last updated Sep 20, 2023

Exim
Exim is a message transfer agent (MTA) developed at the University of Cambridge for use on Unix systems connected to the Internet.
17 Exim alternatives
License model
- Free • Open Source
Application type
- Mail Server
Platforms
- Mac
- Linux
Exim Features
SMTP Support
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Exim VS Postfix
Is Exim a good alternative to Postfix?
- Most users think Exim is a great Postfix alternative.
- Exim is the most popular Mac & Linux alternative to Postfix.
- Exim is the most popular Open Source & free alternative to Postfix.
- Exim is Free and Open SourcePostfix is also Free and Open Source

Mail-in-a-box
Easy-to-deploy mail server.
15 Mail-in-a-box alternatives
License model
- Free • Open Source
Application type
- Mail Server
Platforms
- Self-Hosted
- Roundcube
Mail-in-a-box Features
IMAP Support
Nextcloud integration
Show all NaN Mail-in-a-box features ▾
Mail-in-a-box VS Postfix
Is Mail-in-a-box a good alternative to Postfix?
Comments about Mail-in-a-box as an Alternative to Postfix

Guest
Mail-in-a-box uses Postfix internally
Negative comment •Aug 7, 2021
1
- Mail-in-a-box is the most popular Self-Hosted alternative to Postfix.
- Mail-in-a-box is Free and Open SourcePostfix is also Free and Open Source

KumoMTA
KumoMTA is the only true Open-Source PowerMTA alternative, capable of matching performance of several million messages per hour while providing granular traffic shaping configuration and automation across unlimited IPs.
6 KumoMTA alternatives
License model
- Free • Open Source
Platforms
- Self-Hosted
KumoMTA Features
SMTP Support
Show all NaN KumoMTA features ▾
KumoMTA VS Postfix
Is KumoMTA a good alternative to Postfix?

Mailpit
An email and SMTP testing tool with API for developers.
32 Mailpit alternatives
License model
- Free • Open Source
Platforms
- Mac
- Windows
- Linux
Mailpit Features
Email validation
REST API
Email testing
Show all NaN Mailpit features ▾
Mailpit VS Postfix
Is Mailpit a good alternative to Postfix?
- Mailpit is the most popular Windows alternative to Postfix.
- Mailpit is Free and Open SourcePostfix is also Free and Open Source

MailHog
MailHog is an email testing tool inspired by MailCatcher, but easier to install.
32 MailHog alternatives
License model
- Free • Open Source
Platforms
- Mac
- Windows
- Linux
- Docker
MailHog Features
Portable
Email Forwarding
SMTP Support
Show all NaN MailHog features ▾
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
Is MailHog a good alternative to Postfix?
Comments about MailHog as an Alternative to Postfix

Guest
Mailhog is for testing if another application can send mails.

Postfix is for sending and receiving mails.
Negative comment •May 9, 2021
0
- Some users think MailHog is a great Postfix alternative, some don't.
- MailHog is Free and Open SourcePostfix is also Free and Open Source

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.
12 OpenSMTPD alternatives
License model
- Free • Open Source
Platforms
- Linux
- BSD
- Self-Hosted
OpenSMTPD Features
SMTP Support
Show all NaN OpenSMTPD features ▾
OpenSMTPD VS Postfix
Is OpenSMTPD a good alternative to Postfix?

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.
27 Sendmail alternatives
License model
- Free • Open Source
Application type
- Mail Server
Platforms
- Mac
- Linux
Sendmail Features
SMTP Support
Show all NaN Sendmail features ▾
Sendmail VS Postfix
Is Sendmail a good alternative to Postfix?

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.
12 Courier-MTA alternatives
License model
- Free • Open Source
Application type
- Mail Server
Platforms
- Mac
- Linux
- BSD
- Self-Hosted
Courier-MTA Features
Mail Filtering
SMTP Support
IMAP Support
Show all NaN Courier-MTA features ▾
Courier-MTA VS Postfix
Is Courier-MTA a good alternative to Postfix?

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.
19 sSMTP alternatives
License model
- Free • Open Source
Platforms
- Linux
sSMTP Features
Support for Node.js
SMTP Support
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Discontinued
The last update was in 2013.

sSMTP VS Postfix
Is sSMTP a good alternative to Postfix?

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.
7 Dragonfly Mail Agent alternatives
License model
- Free • Open Source
Platforms
- Linux
- BSD
Dragonfly Mail Agent Features
SMTP Support
Show all NaN Dragonfly Mail Agent features ▾
Dragonfly Mail Agent VS Postfix
Is Dragonfly Mail Agent a good alternative to Postfix?

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.
7 msmtp alternatives
License model
- Free • Open Source
Platforms
- Linux
- Xfce
msmtp Features
Network Tools
SMTP Support
Show all NaN msmtp features ▾
msmtp VS Postfix
Is msmtp a good alternative to Postfix?

Inbucket
Inbucket is an email testing application; it will accept messages for any email address and make them available to view via a web interface.
7 Inbucket alternatives
License model
- Free • Open Source
Platforms
- Mac
- Windows
- Linux
Inbucket Features
POP3 Support
SMTP Support
REST API
Show all NaN Inbucket features ▾
Inbucket VS Postfix
Is Inbucket a good alternative to Postfix?

12 of 26 Postfix alternatives