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Open-Xchange alternatives · Email

Alternatives to Open-Xchange with a one-time purchase

The Open-Xchange listing shows no one-time purchase. 7 of the 125 other email apps in this directory can be bought with a one-time purchase.

Open-Xchange's current pricing could not be confirmed from its own site. 6 of them are free or have a free plan.

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

How each one differs from Open-Xchange

  1. Canary Mail

    AI email client with PGP encryption for Mac, iOS, Windows, Android

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

  2. eM Client

    Desktop email client for Windows and Mac with calendar and chat

    • eM Client has a free plan. Open-Xchange does not.
    • Only eM Client lists Windows, macOS, iOS and Android apps.
    • Only Open-Xchange lists a web app.
    • eM Client can be bought with a one-time purchase.
    eM Client pricing and details

  3. Mailbird

    Desktop email client for Windows and Mac with a unified inbox

    • Mailbird has a free plan. Open-Xchange does not.
    • Only Mailbird lists Windows and macOS apps.
    • Only Open-Xchange lists a web app.
    • Mailbird can be bought with a one-time purchase.
    Mailbird pricing and details

  4. Airmail

    Customizable email client for iPhone, iPad and Mac

    • Airmail has a free plan. Open-Xchange does not.
    • Only Airmail lists macOS and iOS apps.
    • Only Open-Xchange lists a web app.
    • Airmail can be bought with a one-time purchase.
    Airmail pricing and details

  5. FairEmail

    Open source, privacy-oriented email client for Android

    • FairEmail has a free plan. Open-Xchange does not.
    • Only FairEmail lists an Android app.
    • Only Open-Xchange lists a web app.
    • FairEmail is end-to-end encrypted, according to its own site.
    FairEmail pricing and details

  6. Nine

    Exchange ActiveSync email, calendar and tasks app for phones

    • Only Nine lists Android and iOS apps.
    • Only Open-Xchange lists a web app.
    • Nine can be bought with a one-time purchase.
    • Open-Xchange is open source and self-hostable, according to its own site.
    Nine pricing and details

  7. Aqua Mail

    Email app for Android and iOS that handles many accounts at once

    • Aqua Mail has a free plan. Open-Xchange does not.
    • Only Aqua Mail lists iOS and Android apps.
    • Only Open-Xchange lists a web app.
    • Aqua Mail can be bought with a one-time purchase.
    Aqua Mail pricing and details

Common questions

Is there an alternative to Open-Xchange that you buy once?

Yes. Canary Mail, eM Client, Mailbird, Airmail, FairEmail, Nine and Aqua Mail can be bought with a one-time purchase.

Can you buy Open-Xchange once instead of subscribing?

The Open-Xchange listing shows no one-time purchase. The listing was checked on Nov 13, 2026 against the pages it cites.

Which of these email apps are free?

Canary Mail, eM Client, Mailbird, Airmail, FairEmail and Aqua Mail are free or have a free plan.

When was this checked?

Each listing shows its own date. On this page they run from Oct 5, 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.