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Thunderbird alternatives · Email

Alternatives to Thunderbird with a one-time purchase

The Thunderbird listing shows no one-time purchase. 5 of the 51 other email apps in this directory can be bought with a one-time purchase.

Thunderbird is free to use. All of them are free or have a free plan.

5 tools · Listings checked up to Oct 9, 2026 · Where the facts come from

How each one differs from Thunderbird

  1. eM Client

    Desktop email client for Windows and Mac with calendar and chat

    • eM Client starts at $39.95 per year (Personal subscription, up to 3 devices). Thunderbird is free.
    • Only eM Client lists an iOS app.
    • Only Thunderbird lists a Linux app.
    • eM Client can be bought with a one-time purchase.
    eM Client vs ThunderbirdeM Client pricing and details

  2. Mailbird

    Desktop email client for Windows and Mac with a unified inbox

    • Mailbird starts at $34.49 per year (Premium Yearly Plan, US Mac App Store in-app price). Thunderbird is free.
    • Only Thunderbird lists Linux and Android apps.
    • Mailbird can be bought with a one-time purchase.
    • Thunderbird is open source, according to its own site.
    Mailbird vs ThunderbirdMailbird pricing and details

  3. FairEmail

    Open source, privacy-oriented email client for Android

    • FairEmail starts at $7.49 one-time (pro features, US Google Play in-app purchase). Thunderbird is free.
    • Only Thunderbird lists Windows, macOS and Linux apps.
    • FairEmail is end-to-end encrypted, according to its own site.
    • FairEmail can be bought with a one-time purchase.
    FairEmail vs ThunderbirdFairEmail pricing and details

  4. Canary Mail

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

    • Canary Mail starts at $36 per year (Growth), shown as $3 per month billed yearly. Thunderbird is free.
    • Only Canary Mail lists an iOS app.
    • Only Thunderbird lists a Linux app.
    • Canary Mail is end-to-end encrypted, according to its own site.
    Canary Mail pricing and details

  5. Airmail

    Customizable email client for iPhone, iPad and Mac

    • Airmail starts at $7.99 per month, or $39.99 per year (US App Store in-app prices). Thunderbird is free.
    • Only Airmail lists an iOS app.
    • Only Thunderbird lists Windows, Linux and Android apps.
    • Airmail can be bought with a one-time purchase.
    Airmail pricing and details

Common questions

Is there an alternative to Thunderbird that you buy once?

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

Can you buy Thunderbird once instead of subscribing?

The Thunderbird listing shows no one-time purchase. The listing was checked on Oct 5, 2026 against the pages it cites.

When was this checked?

Each listing shows its own date. On this page they run from Oct 5, 2026 to Oct 9, 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 Thunderbird: the alternatives its listing names first, then the tools that share the most features with it.