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Mailu alternatives · Email

Mailu alternatives with a Mac app

The Mailu listing does not include a Mac app. 43 of the 125 other email apps in this directory list a Mac app.

Mailu is free to use. 26 of them are free or have a free plan.

43 tools · Listings checked up to Nov 13, 2026 · Where the facts come from

The 12 closest to Mailu

  1. Inbox Zero

    Open source AI email assistant for Gmail and Outlook

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

  2. Zimbra

    Self-hosted email, calendar and file sharing for organizations

    • Mailu has a free plan. Zimbra does not.
    • Only Zimbra lists Windows, macOS, Linux, iOS and Android apps.
    • Zimbra also covers tasks and calendar.
    • Mailu also covers dMARC.
    Zimbra pricing and details

  3. 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. Mailu is free.
    • Only Proton Mail lists macOS, Windows, Linux, iOS and Android apps.
    • Proton Mail is end-to-end encrypted, according to its own site.
    • Mailu is self-hostable, according to its own site.
    Proton Mail pricing and details

  4. Thunderbird

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

    • Thunderbird is free. Mailu is free.
    • Only Thunderbird lists Windows, macOS, Linux and Android apps.
    • Only Mailu lists a web app.
    • Mailu is self-hostable, according to its own site.
    Thunderbird pricing and details

  5. Tuta Mail

    End-to-end encrypted email and calendar from Germany

    • Tuta Mail starts at €3 per month, paid yearly (lowest paid personal plan). Mailu is free.
    • Only Tuta Mail lists Windows, macOS, Linux, iOS and Android apps.
    • Tuta Mail is end-to-end encrypted, according to its own site.
    • Mailu is self-hostable, according to its own site.
    Tuta Mail pricing and details

  6. Mailspring

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

    • Mailspring starts at $8 per month, or $85 per year (Mailspring Pro). Mailu is free.
    • Only Mailspring lists macOS, Windows and Linux apps.
    • Only Mailu lists a web app.
    • Mailu is self-hostable, according to its own site.
    Mailspring pricing and details

  7. Betterbird

    A fork of Thunderbird with extra features and bug fixes

    • Betterbird is free. Mailu is free.
    • Only Betterbird lists Windows, macOS and Linux apps.
    • Only Mailu lists a web app.
    • Mailu is self-hostable, according to its own site.
    Betterbird pricing and details

  8. NeoMutt

    Command-line mail reader forked from Mutt with extra features

    • NeoMutt is free. Mailu is free.
    • Only NeoMutt lists Linux and macOS apps.
    • Only Mailu lists a web app.
    • Mailu is self-hostable, according to its own site.
    NeoMutt pricing and details

  9. aerc

    Terminal email client with Vim-style keys and git-email support

    • aerc is free. Mailu is free.
    • Only aerc lists Linux and macOS apps.
    • Only Mailu lists a web app.
    • Mailu is self-hostable, according to its own site.
    aerc pricing and details

  10. Sylpheed

    Lightweight desktop email client built on GTK+

    • Sylpheed is free. Mailu is free.
    • Only Sylpheed lists Windows, macOS and Linux apps.
    • Only Mailu lists a web app.
    • Mailu is self-hostable, according to its own site.
    Sylpheed pricing and details

  11. MDaemon

    Email server for Windows with webmail and Outlook connector

    • Mailu has a free plan. MDaemon does not, though it has a free trial.
    • Only MDaemon lists Windows and macOS apps.
    • Mailu is open source, according to its own site.
    • MDaemon also covers calendar.
    MDaemon pricing and details

  12. GFI KerioConnect

    Self-hosted business mail server with calendar, chat and local AI

    • Mailu has a free plan. GFI KerioConnect does not, though it has a free trial.
    • Only GFI KerioConnect lists Windows, macOS and Linux apps.
    • Only Mailu lists a web app.
    • Mailu is open source, according to its own site.
    GFI KerioConnect pricing and details

31 more that list a Mac app

All 43 in one table

Common questions

Which Mailu alternatives have a Mac app?

Inbox Zero, Zimbra, Proton Mail, Thunderbird, Tuta Mail, Mailspring, Betterbird, NeoMutt and 35 more list a Mac app.

Does Mailu have a Mac app?

The Mailu listing does not include a Mac app. It lists Web.

Which of these email apps are free?

Proton Mail, Thunderbird, Tuta Mail, Mailspring, Betterbird, NeoMutt, aerc, Sylpheed and 18 more 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 Nov 13, 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 Mailu: the alternatives its listing names first, then the tools that share the most features with it.