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Fastmail alternatives · Email

End-to-end encrypted alternatives to Fastmail

The Fastmail listing does not describe it as end-to-end encrypted. 8 of the 51 other email apps in this directory are end-to-end encrypted, according to their own sites.

Fastmail is a paid product with a free trial, starting at $3 per user / month, billed yearly (Basic); Individual is $5, billed yearly. 6 of them are free or have a free plan.

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

How each one differs from Fastmail

  1. Proton Mail

    End-to-end encrypted email service based in Switzerland

    • Proton Mail starts at $3.99 per month, billed every 12 months ($47.88); $4.99 billed monthly. Fastmail starts at $3 per user / month, billed yearly (Basic); Individual is $5, billed yearly.
    • Proton Mail has a free plan. Fastmail does not, though it has a free trial.
    • Proton Mail is open source and end-to-end encrypted, according to its own site.
    Proton Mail vs FastmailProton Mail pricing and details

  2. Tuta Mail

    End-to-end encrypted email and calendar from Germany

    • Tuta Mail starts at €3 per month, paid yearly (lowest paid personal plan). Fastmail starts at $3 per user / month, billed yearly (Basic); Individual is $5, billed yearly.
    • Tuta Mail has a free plan. Fastmail does not, though it has a free trial.
    • Tuta Mail is open source and end-to-end encrypted, according to its own site.
    Tuta Mail vs FastmailTuta Mail pricing and details

  3. mailbox

    Paid, ad-free email with cloud storage and office tools from Germany

    • mailbox starts at €1 per month, annual payment only (€12 a year, Light). Fastmail starts at $3 per user / month, billed yearly (Basic); Individual is $5, billed yearly.
    • Only Fastmail lists Windows, macOS, Linux, iOS and Android apps.
    • mailbox is end-to-end encrypted, according to its own site.
    • mailbox also covers tasks, documents, video calls and file sync.
    mailbox vs Fastmailmailbox 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. Fastmail starts at $3 per user / month, billed yearly (Basic); Individual is $5, billed yearly.
    • Canary Mail has a free plan. Fastmail does not, though it has a free trial.
    • Only Fastmail lists a web app.
    • Only Fastmail lists a Linux app.
    Canary Mail pricing and details

  5. BlueMail

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

    • BlueMail starts at $35.99 per year (Plus, shown as $3 per month billed annually). Fastmail starts at $3 per user / month, billed yearly (Basic); Individual is $5, billed yearly.
    • BlueMail has a free plan. Fastmail does not, though it has a free trial.
    • Only Fastmail lists a web app.
    • BlueMail is end-to-end encrypted, according to its own site.
    BlueMail pricing and details

  6. Posteo

    Ad-free, green-powered email from Berlin for €1 a month

    • Posteo starts at €1 per month, prepaid (minimum top-up €12). Fastmail starts at $3 per user / month, billed yearly (Basic); Individual is $5, billed yearly.
    • Only Fastmail lists Windows, macOS, Linux, iOS and Android apps.
    • Posteo is open source and end-to-end encrypted, according to its own site.
    • Posteo also covers notes.
    Posteo pricing and details

  7. Mailfence

    Private email from Belgium with built-in OpenPGP encryption

    • Mailfence starts at €2.50 per month, billed yearly (Base). Fastmail starts at $3 per user / month, billed yearly (Basic); Individual is $5, billed yearly.
    • Mailfence has a free plan. Fastmail does not, though it has a free trial.
    • Only Fastmail lists Windows, macOS and Linux apps.
    • Mailfence is end-to-end encrypted, according to its own site.
    Mailfence pricing and details

  8. FairEmail

    Open source, privacy-oriented email client for Android

    • FairEmail starts at $7.49 one-time (pro features, US Google Play in-app purchase). Fastmail starts at $3 per user / month, billed yearly (Basic); Individual is $5, billed yearly.
    • FairEmail has a free plan. Fastmail does not, though it has a free trial.
    • Only Fastmail lists a web app.
    • Only Fastmail lists Windows, macOS, Linux and iOS apps.
    FairEmail pricing and details

Common questions

Is there an end-to-end encrypted alternative to Fastmail?

Yes. Proton Mail, Tuta Mail, mailbox, Canary Mail, BlueMail, Posteo, Mailfence and FairEmail are end-to-end encrypted, according to their own sites.

Is Fastmail end-to-end encrypted?

The Fastmail listing does not describe it as end-to-end encrypted. The listing was checked on Oct 5, 2026 against the pages it cites.

Which of these email apps are free?

Proton Mail, Tuta Mail, Canary Mail, BlueMail, Mailfence and FairEmail 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 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 Fastmail: the alternatives its listing names first, then the tools that share the most features with it.