Free PowerMTA Alternatives

    The best free alternative to PowerMTA is Postfix, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 10 alternatives to PowerMTA and 12 is free so hopefully you can find a suitable replacement. Other interesting free alternatives to PowerMTA are Zimbra Collaboration Suite (Freemium, Open Source), hMail Server (Free, Open Source), Exim (Free, Open Source) and Sendmail (Free, Open Source).

    This page was last updated Sep 8, 2020

      • FreeOpen Source
      • Mac
      • Linux
      Postfix is a 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.
    1. Zimbra Collaboration is an open, secure collaboration tool for email, calendaring, tasks and more. With the most innovative web application available today, Zimbra boosts the productivity of users on any desktop and dramatically reduces TCO compared to legacy platform vendors.


    2. hMailServer is a free e-mail server for Microsoft Windows. Its used by Internet service providers, companies, governments, schools and enthusiasts in all parts of the world.
      show more
      • FreeOpen Source
      • Mac
      • Linux
      Exim is a message transfer agent (MTA) developed at the University of Cambridge for use on Unix systems connected to the Internet.
      No screenshots yet
      • FreeOpen Source
      • Mac
      • Linux
      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.
      No screenshots yet


      • FreeOpen Source
      • Mac
      • Linux
      • BSD
      • Self-Hosted
      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.
      No screenshots yet
    3. AtMail is an open source webmail client written in PHP. We aim to provide a elegant Ajax webmail client for existing IMAP mailservers, with less bloat and a focus on an intuitive, simple user interface.

      Discontinued

      No longer supported.

    4. SmarterMail delivers Exchange-level email server software features for a fraction of the cost.
      • Free PersonalProprietary
      • Mac
      • Windows
      • Linux
      • BSD
      Xeams is a secure and powerful mail server for that includes a powerful spam filtering engine that eliminates up to 99% of junk email right out of the box. The software offers a flexible approach to email, making it a very user friendly server.
      No screenshots yet
    5. Powerful and simple SMTP/POP3/Finger server, with built in Web interface for accessing mail via Web browser. Supports security features, such as SMTP authentication. Has built-in TZO client for users without static IP address. Version 1.8.8.
      No screenshots yet
    Showing 10 of 12 alternatives