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Posteo alternatives · Email

Alternatives to Posteo with a one-time purchase

The Posteo listing shows no one-time purchase. 5 of the 73 other email apps in this directory can be bought with a one-time purchase.

Posteo is a paid product, starting at €1 per month, prepaid (minimum top-up €12). 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 Posteo

  1. 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. Posteo starts at €1 per month, prepaid (minimum top-up €12).
    • Canary Mail has a free plan. Posteo does not.
    • Only Canary Mail lists macOS, iOS, Windows and Android apps.
    • Only Posteo lists a web app.
    Canary Mail pricing and details

  2. eM Client

    Desktop email client for Windows and Mac with calendar and chat

    • eM Client starts at $49.95 per year (Personal subscription, up to 3 devices). Posteo starts at €1 per month, prepaid (minimum top-up €12).
    • eM Client has a free plan. Posteo does not.
    • Only eM Client lists Windows, macOS, iOS and Android apps.
    • Only Posteo lists a web app.
    eM Client 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). Posteo starts at €1 per month, prepaid (minimum top-up €12).
    • FairEmail has a free plan. Posteo does not.
    • Only FairEmail lists an Android app.
    • Only Posteo lists a web app.
    FairEmail pricing and details

  4. 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). Posteo starts at €1 per month, prepaid (minimum top-up €12).
    • Mailbird has a free plan. Posteo does not.
    • Only Mailbird lists Windows and macOS apps.
    • Only Posteo lists a web app.
    Mailbird 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). Posteo starts at €1 per month, prepaid (minimum top-up €12).
    • Airmail has a free plan. Posteo does not.
    • Only Airmail lists macOS and iOS apps.
    • Only Posteo lists a web app.
    Airmail pricing and details

Common questions

Is there an alternative to Posteo that you buy once?

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

Can you buy Posteo once instead of subscribing?

The Posteo listing shows no one-time purchase. The listing was checked on Oct 6, 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 Posteo: the alternatives its listing names first, then the tools that share the most features with it.