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 Mail-in-a-box, which is both free and Open Source. Other great apps like Postfix are Exim, Mailpit, KumoMTA and MailHog.

Postfix iconPostfix
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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 Jun 14, 2024
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  1. Mail-in-a-box icon
     22 likes
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    Easy-to-deploy mail server.

    17 Mail-in-a-box alternatives

    License model

    • FreeOpen Source

    Application type

    Country of Origin

    • US flagUnited States

    Platforms

    • Self-Hosted
    • Roundcube

    Properties

    1.  Privacy focused

    Features

    1.  Two-factor Authentication
    2.  IMAP Support
    3. Nextcloud icon  Nextcloud integration

    Mail-in-a-box VS Postfix

     
    Comments about Mail-in-a-box as an Alternative to Postfix
    Guest
    Negative Aug 7, 2021
    2

    Mail-in-a-box uses Postfix internally

    Postfix Icon
    Mail-in-a-box icon
    • Mail-in-a-box is the most popular Self-Hosted alternative to Postfix.

    • Mail-in-a-box is the most popular Open Source & free alternative to Postfix.

    • Mail-in-a-box is Free and Open SourcePostfix is also Free and Open Source
    • Mail-in-a-box is Privacy focusedPostfix is not according to our users
  2. Exim icon
     11 likes
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    Exim is a message transfer agent (MTA) developed at the University of Cambridge for use on Unix systems connected to the Internet.

    License model

    • FreeOpen Source

    Application type

    Country of Origin

    • International

    Platforms

    • Mac
    • Linux

    Exim Features

    1.  SMTP Support

    Exim VS Postfix

     
    • Almost everyone thinks Exim is a great Postfix alternative.

    • Exim is the most popular Mac & Linux alternative to Postfix.

    • Exim is Free and Open SourcePostfix is also Free and Open Source
  3. Mailpit icon
     2 likes
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    An email and SMTP testing tool with API for developers.

    32 Mailpit alternatives

    License model

    • FreeOpen Source

    Country of Origin

    • DE flagGermany
    • European Union flagEU

    Platforms

    • Mac
    • Windows
    • Linux

    Mailpit Features

    1.  Email validation
    2.  REST API
    3.  Email testing

    Mailpit VS Postfix

     
    • Mailpit is the most popular Windows alternative to Postfix.

    • Mailpit is Free and Open SourcePostfix is also Free and Open Source
  4. KumoMTA icon
     4 likes
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    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.

    License model

    • FreeOpen Source

    Platforms

    • Self-Hosted

    KumoMTA Features

    1.  SMTP Support

    KumoMTA VS Postfix

     
  5. MailHog icon
     8 likes
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    MailHog is an email testing tool inspired by MailCatcher, but easier to install.

    32 MailHog alternatives

    License model

    • FreeOpen Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Docker
    Discontinued

    The last version (1.0.1) is from August 2020, and the project is unmaintained. https://github.com/mailhog/MailHog/issues/442

    MailHog Features

    1.  Portable
    2.  Email Forwarding
    3.  SMTP Support

    MailHog VS Postfix

     
    Comments about MailHog as an Alternative to Postfix
    Guest
    Negative May 9, 2021
    0

    Mailhog is for testing if another application can send mails.

    Postfix is for sending and receiving mails.

    Postfix Icon
    MailHog icon
    • Some users think MailHog is a great Postfix alternative, some don't.

    • MailHog is Free and Open SourcePostfix is also Free and Open Source
  6. Stalwart icon
     1 like
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    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

    License model

    • FreemiumOpen Source

    Platforms

    • Self-Hosted
    • Docker

    Stalwart Features

    1.  Spam Filter
    2.  SMTP Support
    3.  Rust
    4.  POP3 Support
    5.  JMAP

    Stalwart VS Postfix

     
  7. OpenSMTPD icon
     6 likes
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    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.

    License model

    • FreeOpen Source

    Platforms

    • Linux
    • BSD
    • Self-Hosted

    OpenSMTPD Features

    1.  SMTP Support

    OpenSMTPD VS Postfix

     
  8. Haraka icon
     3 likes
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    Haraka is an open source SMTP server written in Node.js which provides extremely high performance coupled with a flexible plugin system allowing Javascript programmers full access to change the behaviour of the server.

    7 Haraka alternatives

    License model

    • FreeOpen Source

    Country of Origin

    • International

    Platforms

    • Self-Hosted
    • Node.JS

    Haraka Features

    1.  Support for Javascript

    Haraka VS Postfix

     
  9. Sendmail icon
     4 likes
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    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.

    28 Sendmail alternatives

    License model

    • FreeOpen Source

    Application type

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • Linux

    Sendmail Features

    1.  SMTP Support

    Sendmail VS Postfix

     
  10. Courier-MTA icon
     7 likes
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    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.

    License model

    • FreeOpen Source

    Application type

    Platforms

    • Mac
    • Linux
    • BSD
    • Self-Hosted

    Courier-MTA Features

    1.  Mail Filtering
    2.  SMTP Support
    3.  IMAP Support

    Courier-MTA VS Postfix

     
  11.  3 likes
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    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.

    License model

    • FreeOpen Source

    Platforms

    • Linux
    Discontinued

    The last update was in 2013.

    sSMTP Features

    1. Node.js icon  Support for Node.js
    2.  SMTP Support

    sSMTP VS Postfix

     
  12. Copy a direct link to this comment to your clipboard

    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.

    License model

    • FreeOpen Source

    Platforms

    • Linux
    • BSD

    Dragonfly Mail Agent Features

    1.  SMTP Support

    Dragonfly Mail Agent VS Postfix

     
12 of 26 Postfix alternatives