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Posteo alternatives · Email

Free alternatives to Posteo

Posteo has no free plan. 44 of the 73 other email apps in this directory are free or have a free plan.

Posteo is a paid product, starting at €1 per month, prepaid (minimum top-up €12). 10 of them have no paid plan at all; the rest pair a free plan with paid ones.

44 tools · Listings checked up to Nov 12, 2026 · Where the facts come from

The 12 closest to Posteo

  1. Tuta Mail

    End-to-end encrypted email and calendar from Germany

    What is free: 1 GB of storage, one calendar and 3 labels, with end-to-end encryption. Free accounts are deleted after more than six months without a login.

    • Tuta Mail starts at €3 per month, paid yearly (lowest paid personal plan). Posteo starts at €1 per month, prepaid (minimum top-up €12).
    • Tuta Mail has a free plan. Posteo does not.
    • Only Tuta Mail lists Windows, macOS, Linux, iOS and Android apps.
    • Posteo also covers notes.
    Tuta Mail vs PosteoTuta Mail pricing and details

  2. Proton Mail

    End-to-end encrypted email service based in Switzerland

    What is free: Proton Free: 1 email address, up to 1 GB of mail storage (500 MB until the setup steps are completed), a limit of 150 sent messages a day and 3 personal calendars.

    • Proton Mail starts at $3.99 per month, billed every 12 months ($47.88); $4.99 billed monthly. Posteo starts at €1 per month, prepaid (minimum top-up €12).
    • Proton Mail has a free plan. Posteo does not.
    • Only Proton Mail lists macOS, Windows, Linux, iOS and Android apps.
    • Posteo also covers notes.
    Proton Mail vs PosteoProton Mail pricing and details

  3. Mailfence

    Private email from Belgium with built-in OpenPGP encryption

    What is free: 1 GB in total (500 MB of email, 500 MB of documents) with encryption and the iOS and Android apps. Support is the knowledge base only, and inactive free accounts are suspended after 7 months.

    • Mailfence starts at €2.50 per month, billed yearly (Base). Posteo starts at €1 per month, prepaid (minimum top-up €12).
    • Mailfence has a free plan. Posteo does not.
    • Only Mailfence lists iOS and Android apps.
    • Posteo is open source, according to its own site.
    Mailfence vs PosteoMailfence pricing and details

  4. Mailo

    French webmail with a free tier, ad-free paid plans and calendar

    What is free: Mailo Free: 1 GB mailbox, 500 MB for documents and photos, 5 aliases, IMAP4, and advertising banners.

    • Mailo starts at €1.50 per month, for a 1 to 5 year term. Posteo starts at €1 per month, prepaid (minimum top-up €12).
    • Mailo has a free plan. Posteo does not.
    • Only Mailo lists iOS and Android apps.
    • Posteo is open source and end-to-end encrypted, according to its own site.
    Mailo vs PosteoMailo pricing and details

  5. Thunderbird

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

    What is free: Everything. There is no paid plan.

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

  6. Canary Mail

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

    What is free: Free forever on up to 2 devices: unified inbox, unlimited mail accounts, snooze and pin, email templates, Inbox Zero tools and lite read receipts.

    • 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

  7. eM Client

    Desktop email client for Windows and Mac with calendar and chat

    What is free: Free license for personal, non-commercial use: 2 email accounts on one device, with email, calendar, contacts and tasks. The Android and iOS apps are free and need no license.

    • 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

  8. BlueMail

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

    What is free: Personal plan, free for individual use: unlimited email accounts, unified inbox, Clusters, MagicSync and PGP encryption on every platform. GemAI and desktop email backup are not included.

    • BlueMail starts at $35.99 per year (Plus, shown as $3 per month billed annually). Posteo starts at €1 per month, prepaid (minimum top-up €12).
    • BlueMail has a free plan. Posteo does not.
    • Only BlueMail lists iOS, Android, macOS, Windows and Linux apps.
    • Only Posteo lists a web app.
    BlueMail pricing and details

  9. FairEmail

    Open source, privacy-oriented email client for Android

    What is free: The app is free without ads: unlimited accounts and addresses, unified inbox, threading, offline storage and OpenPGP. Pro features such as snooze, send later and filter rules are paid.

    • 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

  10. Wino Mail

    Free, open source mail and calendar app for Windows

    What is free: Wino Mail is always free with no Wino Account needed: Mail, Calendar, Contacts and To Do, all core customization options and up to 3 email accounts.

    • Wino Mail has a free plan. Posteo does not.
    • Only Wino Mail lists a Windows app.
    • Only Posteo lists a web app.
    • Posteo is end-to-end encrypted, according to its own site.
    Wino Mail pricing and details

  11. Evolution

    GNOME's free mail, calendar and address book app

    What is free: Everything. There is no paid plan.

    • Evolution is free. Posteo starts at €1 per month, prepaid (minimum top-up €12).
    • Evolution has a free plan. Posteo does not.
    • Only Evolution lists a Linux app.
    • Only Posteo lists a web app.
    Evolution pricing and details

  12. Betterbird

    A fork of Thunderbird with extra features and bug fixes

    What is free: Everything. There is no paid plan.

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

32 more that are free or have a free plan

All 44 in one table

Common questions

Is there a free alternative to Posteo?

Yes. Tuta Mail, Proton Mail, Mailfence, Mailo, Thunderbird, Canary Mail, eM Client, BlueMail and 36 more are free or have a free plan.

Does Posteo have a free plan?

Posteo has no free plan. Posteo is a paid product, starting at €1 per month, prepaid (minimum top-up €12).

When was this checked?

Each listing shows its own date. On this page they run from Oct 4, 2026 to Nov 12, 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.