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Open-Xchange alternatives · Email

Open-Xchange alternatives with a Linux app

The Open-Xchange listing does not include a Linux app. 23 of the 125 other email apps in this directory list a Linux app.

Open-Xchange's current pricing could not be confirmed from its own site. 19 of them are free or have a free plan.

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

The 12 closest to Open-Xchange

  1. Zimbra

    Self-hosted email, calendar and file sharing for organizations

    • Only Zimbra lists Windows, macOS, Linux, iOS and Android apps.
    • Zimbra also covers tasks.
    Zimbra vs Open-XchangeZimbra pricing and details

  2. iRedMail

    Open-source mail server installer for Linux and BSD

    • iRedMail has a free plan. Open-Xchange does not.
    • Only iRedMail lists a Linux app.
    • Only Open-Xchange lists a web app.
    iRedMail pricing and details

  3. GFI KerioConnect

    Self-hosted business mail server with calendar, chat and local AI

    • Only GFI KerioConnect lists Windows, macOS and Linux apps.
    • Only Open-Xchange lists a web app.
    • Open-Xchange is open source, according to its own site.
    • GFI KerioConnect also covers shared inbox.
    GFI KerioConnect pricing and details

  4. Proton Mail

    End-to-end encrypted email service based in Switzerland

    • Proton Mail has a free plan. Open-Xchange does not.
    • Only Proton Mail lists macOS, Windows, Linux, iOS and Android apps.
    • Proton Mail is end-to-end encrypted, according to its own site.
    • Open-Xchange is self-hostable, according to its own site.
    Proton Mail pricing and details

  5. Thunderbird

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

    • Thunderbird has a free plan. Open-Xchange does not.
    • Only Thunderbird lists Windows, macOS, Linux and Android apps.
    • Only Open-Xchange lists a web app.
    • Open-Xchange is self-hostable, according to its own site.
    Thunderbird pricing and details

  6. Zoho Mail

    Ad-free business email hosting with calendar, tasks and notes

    • Zoho Mail has a free plan. Open-Xchange does not.
    • Only Zoho Mail lists macOS, Windows, Linux, iOS and Android apps.
    • Open-Xchange is open source and self-hostable, according to its own site.
    • Zoho Mail also covers tasks.
    Zoho Mail pricing and details

  7. Tuta Mail

    End-to-end encrypted email and calendar from Germany

    • Tuta Mail has a free plan. Open-Xchange does not.
    • Only Tuta Mail lists Windows, macOS, Linux, iOS and Android apps.
    • Tuta Mail is end-to-end encrypted, according to its own site.
    • Open-Xchange is self-hostable, according to its own site.
    Tuta Mail pricing and details

  8. BlueMail

    Cross-platform email client with a unified inbox and built-in AI

    • BlueMail has a free plan. Open-Xchange does not.
    • Only BlueMail lists iOS, Android, macOS, Windows and Linux apps.
    • Only Open-Xchange lists a web app.
    • BlueMail is end-to-end encrypted, according to its own site.
    BlueMail pricing and details

  9. Newton Mail

    Cross-platform email app with read receipts, snooze and send later

    • Newton Mail has a free plan. Open-Xchange does not.
    • Only Newton Mail lists macOS, Windows, Linux, iOS and Android apps.
    • Only Open-Xchange lists a web app.
    • Open-Xchange is open source and self-hostable, according to its own site.
    Newton Mail pricing and details

  10. Evolution

    GNOME's free mail, calendar and address book app

    • Evolution has a free plan. Open-Xchange does not.
    • Only Evolution lists a Linux app.
    • Only Open-Xchange lists a web app.
    • Open-Xchange is self-hostable, according to its own site.
    Evolution pricing and details

  11. Betterbird

    A fork of Thunderbird with extra features and bug fixes

    • Betterbird has a free plan. Open-Xchange does not.
    • Only Betterbird lists Windows, macOS and Linux apps.
    • Only Open-Xchange lists a web app.
    • Open-Xchange is self-hostable, according to its own site.
    Betterbird pricing and details

  12. Axigen

    Mail server with calendars and webmail for Windows and Linux

    • Axigen has a free plan. Open-Xchange does not.
    • Only Axigen lists Windows and Linux apps.
    • Open-Xchange is open source, according to its own site.
    Axigen pricing and details

11 more that list a Linux app

All 23 in one table

Common questions

Which Open-Xchange alternatives have a Linux app?

Zimbra, iRedMail, GFI KerioConnect, Proton Mail, Thunderbird, Zoho Mail, Tuta Mail, BlueMail and 15 more list a Linux app.

Does Open-Xchange have a Linux app?

The Open-Xchange listing does not include a Linux app. It lists Web.

Which of these email apps are free?

iRedMail, Proton Mail, Thunderbird, Zoho Mail, Tuta Mail, BlueMail, Newton Mail, Evolution and 11 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 Open-Xchange: the alternatives its listing names first, then the tools that share the most features with it.