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Open Source Mailgun Alternatives

The best open source alternative to Mailgun is Postal. If that doesn't suit you, our users have ranked more than 50 alternatives to Mailgun and four of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Mailgun are Mailwhale, Cuttlefish.io and iReach.

Mailgun alternatives are mainly Email Marketing Services but may also be Email Clients. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of Mailgun.
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Mailgun is email automation for developers. Use our REST APIs to effortlessly send, receive and track email from your...

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  1. Postal icon

    Postal

    • Linux
    • BSD
    • Self-Hosted
    5 alternatives to Postal 

    The open source mail server - Postal is a complete and fully featured mail server for use by websites & web servers. Think Sendgrid, Mailgun or Postmark but open source and ready for you to run on your own servers.

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  2. Mailwhale icon

    Mailwhale

    • FreeOpen Source
    • Online
    • Self-Hosted
    68 alternatives to Mailwhale 

    A bring-your-own-SMTP-server mail relay with REST API.

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  3. Cuttlefish.io

    • FreeOpen Source
    • Self-Hosted
    67 alternatives to Cuttlefish.io 

    Cuttlefish offers basic bounce email handling, ensuring you maintain your good mail reputation by not resending to bounced addresses.

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  4. iReach

    • FreeOpen Source
    • Self-Hosted
    • Ruby
    46 alternatives to iReach 

    iReach is an open source web-based application developed by Lone Star Technologies which will allow you to create and manage html email campaigns. Some uses include newsletters, advertising campaigns, product notifications, and press releases.

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    This app doesn't have any features at the moment.
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