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Migadu alternatives · Email

Open-source alternatives to Migadu

Migadu is not described as open source on its own site. 39 of the 125 other email apps in this directory are open source, according to their own sites.

Migadu is a paid product with a free trial, starting at $19 per year (Micro, no monthly option). 33 of them are free or have a free plan.

39 tools · Listings checked up to Nov 13, 2026 · Where the facts come from

The 12 closest to Migadu

  1. Proton Mail

    End-to-end encrypted email service based in Switzerland

    • Proton Mail starts at $3.99 per month, billed every 12 months ($47.88); $4.99 billed monthly. Migadu starts at $19 per year (Micro, no monthly option).
    • Proton Mail has a free plan. Migadu does not, though it has a free trial.
    • Only Proton Mail lists macOS, Windows, Linux, iOS and Android apps.
    • Proton Mail is open source and end-to-end encrypted, according to its own site.
    Proton Mail pricing and details

  2. Thunderbird

    Free, open-source email app for Windows, macOS, Linux and Android

    • Thunderbird is free. Migadu starts at $19 per year (Micro, no monthly option).
    • Thunderbird has a free plan. Migadu does not, though it has a free trial.
    • Only Thunderbird lists Windows, macOS, Linux and Android apps.
    • Only Migadu lists a web app.
    Thunderbird pricing and details

  3. Tuta Mail

    End-to-end encrypted email and calendar from Germany

    • Tuta Mail starts at €3 per month, paid yearly (lowest paid personal plan). Migadu starts at $19 per year (Micro, no monthly option).
    • Tuta Mail has a free plan. Migadu does not, though it has a free trial.
    • Only Tuta Mail lists Windows, macOS, Linux, iOS and Android apps.
    • Tuta Mail is open source and end-to-end encrypted, according to its own site.
    Tuta Mail pricing and details

  4. Posteo

    Ad-free, green-powered email from Berlin for €1 a month

    • Posteo starts at €1 per month, prepaid (minimum top-up €12). Migadu starts at $19 per year (Micro, no monthly option).
    • Posteo is open source and end-to-end encrypted, according to its own site.
    • Posteo also covers notes.
    Posteo pricing and details

  5. Wino Mail

    Free, open source mail and calendar app for Windows

    • Wino Mail has a free plan. Migadu does not, though it has a free trial.
    • Only Wino Mail lists a Windows app.
    • Only Migadu lists a web app.
    • Wino Mail is open source, according to its own site.
    Wino Mail pricing and details

  6. Zimbra

    Self-hosted email, calendar and file sharing for organizations

    • Only Zimbra lists Windows, macOS, Linux, iOS and Android apps.
    • Zimbra is open source and self-hostable, according to its own site.
    • Zimbra also covers tasks.
    Zimbra pricing and details

  7. Evolution

    GNOME's free mail, calendar and address book app

    • Evolution is free. Migadu starts at $19 per year (Micro, no monthly option).
    • Evolution has a free plan. Migadu does not, though it has a free trial.
    • Only Evolution lists a Linux app.
    • Only Migadu lists a web app.
    Evolution pricing and details

  8. Betterbird

    A fork of Thunderbird with extra features and bug fixes

    • Betterbird is free. Migadu starts at $19 per year (Micro, no monthly option).
    • Betterbird has a free plan. Migadu does not, though it has a free trial.
    • Only Betterbird lists Windows, macOS and Linux apps.
    • Only Migadu lists a web app.
    Betterbird pricing and details

  9. SOGo

    Open-source groupware with webmail, calendars and contacts

    • SOGo is free. Migadu starts at $19 per year (Micro, no monthly option).
    • SOGo has a free plan. Migadu does not, though it has a free trial.
    • SOGo is open source and self-hostable, according to its own site.
    SOGo pricing and details

  10. Open-Xchange

    OX App Suite email platform sold to providers and governments

    • Open-Xchange is open source and self-hostable, according to its own site.
    Open-Xchange pricing and details

  11. Horde

    Free open-source webmail, calendar, contacts and tasks suite

    • Horde is free. Migadu starts at $19 per year (Micro, no monthly option).
    • Horde has a free plan. Migadu does not, though it has a free trial.
    • Horde is open source and self-hostable, according to its own site.
    • Horde also covers notes and tasks.
    Horde pricing and details

  12. mailcow

    Dockerized open-source mail server with a web admin UI

    • mailcow is free. Migadu starts at $19 per year (Micro, no monthly option).
    • mailcow has a free plan. Migadu does not, though it has a free trial.
    • mailcow is open source and self-hostable, according to its own site.
    mailcow pricing and details

27 more that are open source

All 39 in one table

Common questions

Is there an open-source alternative to Migadu?

Yes. Proton Mail, Thunderbird, Tuta Mail, Posteo, Wino Mail, Zimbra, Evolution, Betterbird and 31 more are open source, according to their own sites.

Is Migadu open source?

Migadu is not described as open source on its own site. The listing was checked on Nov 12, 2026 against the pages it cites.

Which of these email apps are free?

Proton Mail, Thunderbird, Tuta Mail, Wino Mail, Evolution, Betterbird, SOGo, Horde and 25 more are free or have a free plan.

When was this checked?

Each listing shows its own date. On this page they run from Oct 4, 2026 to Nov 13, 2026. Vendors change prices and plans without notice, so confirm on their site before you buy.

This page is built from the listings. A tool is here because its listing says so, and the order is how close each is to Migadu: the alternatives its listing names first, then the tools that share the most features with it.