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mailbox alternatives · Email

mailbox alternatives with a Linux app

The mailbox listing does not include a Linux app. 9 of the 51 other email apps in this directory list a Linux app.

mailbox is a paid product with a free trial, starting at €1 per month, annual payment only (€12 a year, Light). 7 of them are free or have a free plan.

9 tools · Listings checked up to Oct 6, 2026 · Where the facts come from

How each one differs from mailbox

  1. Tuta Mail

    End-to-end encrypted email and calendar from Germany

    • Tuta Mail starts at €3 per month, paid yearly (lowest paid personal plan). mailbox starts at €1 per month, annual payment only (€12 a year, Light).
    • Tuta Mail has a free plan. mailbox does not, though it has a free trial.
    • Only Tuta Mail lists Windows, macOS, Linux, iOS and Android apps.
    • Tuta Mail is open source, according to its own site.
    Tuta Mail vs mailboxTuta Mail 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. mailbox starts at €1 per month, annual payment only (€12 a year, Light).
    • Proton Mail has a free plan. mailbox does not, though it has a free trial.
    • Only Proton Mail lists macOS, Windows, Linux, iOS and Android apps.
    • Proton Mail is open source, according to its own site.
    Proton Mail vs mailboxProton Mail pricing and details

  3. Fastmail

    Paid, ad-free email with calendar, contacts and custom domains

    • Fastmail starts at $3 per user / month, billed yearly (Basic); Individual is $5, billed yearly. mailbox starts at €1 per month, annual payment only (€12 a year, Light).
    • 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.
    Fastmail vs mailboxFastmail pricing and details

  4. Zoho Mail

    Ad-free business email hosting with calendar, tasks and notes

    • Zoho Mail starts at $1 per user / month, billed annually (Mail Lite, 5 GB). mailbox starts at €1 per month, annual payment only (€12 a year, Light).
    • Zoho Mail has a free plan. mailbox does not, though it has a free trial.
    • Only Zoho Mail lists macOS, Windows, Linux, iOS and Android apps.
    • mailbox is end-to-end encrypted, according to its own site.
    Zoho Mail vs mailboxZoho Mail pricing and details

  5. Thunderbird

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

    • Thunderbird is free. mailbox starts at €1 per month, annual payment only (€12 a year, Light).
    • Thunderbird has a free plan. mailbox does not, though it has a free trial.
    • Only Thunderbird lists Windows, macOS, Linux and Android apps.
    • Only mailbox lists a web app.
    Thunderbird pricing and details

  6. 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). mailbox starts at €1 per month, annual payment only (€12 a year, Light).
    • BlueMail has a free plan. mailbox does not, though it has a free trial.
    • Only BlueMail lists iOS, Android, macOS, Windows and Linux apps.
    • Only mailbox lists a web app.
    BlueMail pricing and details

  7. HEY

    Email service and calendar with sender screening, from 37signals

    • HEY starts at $99 per year (HEY for You, annual billing only). mailbox starts at €1 per month, annual payment only (€12 a year, Light).
    • Only HEY lists macOS, Windows, Linux, iOS and Android apps.
    • mailbox is end-to-end encrypted, according to its own site.
    • HEY also covers templates.
    HEY pricing and details

  8. Newton Mail

    Cross-platform email app with read receipts, snooze and send later

    • Newton Mail starts at $5 per month, billed annually ($6.99 billed monthly). mailbox starts at €1 per month, annual payment only (€12 a year, Light).
    • Newton Mail has a free plan. mailbox does not, though it has a free trial.
    • Only Newton Mail lists macOS, Windows, Linux, iOS and Android apps.
    • Only mailbox lists a web app.
    Newton Mail pricing and details

  9. Mailspring

    Open-source desktop email client for Mac, Windows and Linux

    • Mailspring starts at $8 per month, or $85 per year (Mailspring Pro). mailbox starts at €1 per month, annual payment only (€12 a year, Light).
    • Mailspring has a free plan. mailbox does not, though it has a free trial.
    • Only Mailspring lists macOS, Windows and Linux apps.
    • Only mailbox lists a web app.
    Mailspring pricing and details

Common questions

Which mailbox alternatives have a Linux app?

Tuta Mail, Proton Mail, Fastmail, Zoho Mail, Thunderbird, BlueMail, HEY, Newton Mail and 1 more list a Linux app.

Does mailbox have a Linux app?

The mailbox listing does not include a Linux app. It lists Web.

Which of these email apps are free?

Tuta Mail, Proton Mail, Zoho Mail, Thunderbird, BlueMail, Newton Mail and Mailspring 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 6, 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 mailbox: the alternatives its listing names first, then the tools that share the most features with it.