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Inbox Zero alternatives · Email

End-to-end encrypted alternatives to Inbox Zero

The Inbox Zero 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.

Inbox Zero is a paid product with a free trial, starting at $18 per user / month, billed annually ($20 billed monthly). 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 Inbox Zero

  1. 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). Inbox Zero starts at $18 per user / month, billed annually ($20 billed monthly).
    • BlueMail has a free plan. Inbox Zero does not, though it has a free trial.
    • Only BlueMail lists a Linux app.
    • Only Inbox Zero lists a web app.
    BlueMail pricing and details

  2. 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. Inbox Zero starts at $18 per user / month, billed annually ($20 billed monthly).
    • Proton Mail has a free plan. Inbox Zero does not, though it has a free trial.
    • Only Proton Mail lists a Linux app.
    • Only Inbox Zero lists a browser extension.
    Proton Mail pricing and details

  3. Tuta Mail

    End-to-end encrypted email and calendar from Germany

    • Tuta Mail starts at €3 per month, paid yearly (lowest paid personal plan). Inbox Zero starts at $18 per user / month, billed annually ($20 billed monthly).
    • Tuta Mail has a free plan. Inbox Zero does not, though it has a free trial.
    • Only Tuta Mail lists a Linux app.
    • Only Inbox Zero lists a browser extension.
    Tuta Mail 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. Inbox Zero starts at $18 per user / month, billed annually ($20 billed monthly).
    • Canary Mail has a free plan. Inbox Zero does not, though it has a free trial.
    • Only Inbox Zero lists a web app.
    • Only Inbox Zero lists a browser extension.
    Canary Mail pricing and details

  5. Posteo

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

    • Posteo starts at €1 per month, prepaid (minimum top-up €12). Inbox Zero starts at $18 per user / month, billed annually ($20 billed monthly).
    • Only Inbox Zero lists macOS, Windows, iOS and Android apps.
    • Only Inbox Zero lists a browser extension.
    • Posteo is end-to-end encrypted, according to its own site.
    Posteo pricing and details

  6. FairEmail

    Open source, privacy-oriented email client for Android

    • FairEmail starts at $7.49 one-time (pro features, US Google Play in-app purchase). Inbox Zero starts at $18 per user / month, billed annually ($20 billed monthly).
    • FairEmail has a free plan. Inbox Zero does not, though it has a free trial.
    • Only Inbox Zero lists a web app.
    • Only Inbox Zero lists macOS, Windows and iOS apps.
    FairEmail pricing and details

  7. 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). Inbox Zero starts at $18 per user / month, billed annually ($20 billed monthly).
    • Only Inbox Zero lists macOS, Windows, iOS and Android apps.
    • Only Inbox Zero lists a browser extension.
    • mailbox is end-to-end encrypted, according to its own site.
    mailbox pricing and details

  8. Mailfence

    Private email from Belgium with built-in OpenPGP encryption

    • Mailfence starts at €2.50 per month, billed yearly (Base). Inbox Zero starts at $18 per user / month, billed annually ($20 billed monthly).
    • Mailfence has a free plan. Inbox Zero does not, though it has a free trial.
    • Only Inbox Zero lists macOS and Windows apps.
    • Only Inbox Zero lists a browser extension.
    Mailfence pricing and details

Common questions

Is there an end-to-end encrypted alternative to Inbox Zero?

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

Is Inbox Zero end-to-end encrypted?

The Inbox Zero listing does not describe it as end-to-end encrypted. The listing was checked on Oct 9, 2026 against the pages it cites.

Which of these email apps are free?

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