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Sendmail Alternatives for Linux

There are many alternatives to Sendmail for Linux if you are looking for a replacement. The best Linux alternative is Zimbra Collaboration Suite, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to Sendmail and 18 are available for Linux so hopefully you can find a suitable replacement. Other interesting Linux alternatives to Sendmail are Zentyal, Postfix, OpenSMTPD and sSMTP.

Sendmail alternatives are mainly Mail Servers but may also be WebMail Providers or Email Clients. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of Sendmail.
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  • Mac
  • Linux

Sendmail is a general purpose internetwork email routing facility that supports many kinds of transfer and delivery...

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  1. Zimbra Collaboration Suite icon

    Zimbra Collaboration Suite

    • Linux
    • Online
    • Self-Hosted
    42 alternatives to Zimbra Collaboration Suite 

    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.

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    Features
    1.  Real time collaborationMultiple users can work together in Zimbra Collaboration Suite simultaneously.
    Screenshot
  2. Zentyal icon

    Zentyal

    • Linux
    28 alternatives to Zentyal 

    Zentyal is a native Microsoft Active Directory implementation on Linux incorporating all the network services required in a small and medium business environment: Directory & Domain Server, Mail Server, Gateway and Infrastructure Server.

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    Features
    Dashboard


  3. Postfix icon

    Postfix

    • Mac
    • Linux
    22 alternatives to Postfix 

    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.

     Postfix has no features, suggest some!
    Screenshot
  4. OpenSMTPD icon

    OpenSMTPD

    • FreeOpen 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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    Features
  5. sSMTP

    • FreeOpen 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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    Features
    Discontinued

    The last update was in 2013.



  6. Exim icon

    Exim

    • FreeOpen Source
    • 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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    Features
  7. msmtp

    • FreeOpen 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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    Features
  8. Courier-MTA icon

    Courier-MTA

    • 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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    Features
    1.  Mail FilteringCourier-MTA classifies email messages according to specified criteria, allowing you to automatically recognize fraudulent or spam messages.
  9. Dragonfly Mail Agent

    • FreeOpen 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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    Features
  10. Atmail Email Server icon

    Atmail Email Server

    • Linux
    • Online
    69 alternatives to Atmail Email Server 

    Atmail webmail system offers a webmail client, email server platform and mailserver appliance for Linux, Unix and Windows.

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    Features
    Intuitive Webmail Interface
Showing 10 of 18 alternatives
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