Software Alternatives, Accelerators & Startups


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

Sendmail Alternatives

The best Sendmail alternatives based on verified products, community votes, reviews and other factors.
Filter: 12 Open-Source Alternatives Latest update:

  1. 34

    Postfix is a mail transfer agent (MTA) that routes and delivers electronic mail.

  2. 21

    sSMTP is a simple MTA to deliver mail from a computer to a mail server.

  3. The #1 email warming service to improve your deliverability by generating realistic and meaningful engagement to your emails. Easy-to-use solution to help you land in the main inbox instead of the spam folder.

    Visit website paid $19.5 / Monthly (Pro)

    Visit website
  4. 26

    Exim is a message transfer agent (MTA) developed at the University of Cambridge for use on Unix systems connected to the Internet.

    Open Source

  5. 14

    msmtp is an SMTP client.

  6. 17

    OpenSMTPD is a FREE implementation of the server-side SMTP protocol as defined by RFC 5321, with...

    Open Source

  7. 11

    MailerQ is a high performance Mail Transfer Agent (MTA) designed for delivering large volume email messages at very high speeds.

  8. 13

    PowerMTA is an industrial-strength software for high-volume email delivery.

  9. A fully fledged, free email server solution, an open source project (GPL v2).

    Open Source

  10. 12

    Zimbra is trusted by over 500 million users to increase productivity with a complete set of collaboration tools while maintaining total control over security and privacy.

  11. 10

    hMailServer is a free e-mail server for Microsoft Windows.

  12. KumoMTA is the world's first Open-Source MTA designed from the ground-up for large-volume senders. Get a fast, flexible, supported solution.

    Open Source free

  13. 10

    Microsoft Exchange Server is a messaging and collaborative software product developed by Microsoft.

  14. An open source mailserver suite.

    Open Source

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