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    Postbox Alternatives for Linux

    Postbox is not available for Linux but there are plenty of alternatives that runs on Linux with similar functionality. The best Linux alternative is Thunderbird, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to Postbox and many of them are available for Linux so hopefully you can find a suitable replacement. Other interesting Linux alternatives to Postbox are Mailspring, Evolution, Claws Mail and Geary.

    Postbox is mainly a Email Client but alternatives to it may also be Calendar Apps or Email Organizers. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of Postbox.
    This page was last updated Feb 23, 2022
    • Mac
    • Windows
    Postbox is an email application that helps you organize your work life and get stuff done.
    Learn more about Postbox

    1. Thunderbird is a free, open source, cross-platform e-mail, news and instant messaging client. The project strategy is modeled after Mozilla Firefox.
      Most users think Thunderbird is a great alternative to Postbox.
    2. Boost your productivity and send better email with Mailspring, a beautiful, fast email client for Mac, Windows, and Linux. Mailspring is free to use and an optional pro version adds read receipts, send later, reminders and more.

    3. Evolution is a personal information management application that provides integrated mail, calendaring, address book and task list functionality.
    4. Geary is an email application built around conversations, for the GNOME 3 desktop.

    5. Mutt is a small but very powerful text-based mail client for Unix operating systems.
    6. KMail is the email component of Kontact, the integrated personal information manager of KDE. Kontact is a personal information manager and groupware software suite for KDE. It supports calendars, contacts, notes, to-do lists, news, and email.
    7. Personal Information Manager (Mail, Contact, Calendar and more).
      • FreeOpen Source
      • Mac
      • Windows
      • Linux
      • BSD
      Sylpheed is a simple, lightweight but featureful, and easy-to-use e-mail client (mailer, MUA).
      • Free PersonalProprietary
      • Mac
      • Windows
      • Linux
      • Android
      • iPhone
      • Android Tablet
      • iPad
      • Android Wear
      • Kindle Fire
      TypeApp is an all-free, beautifully designed, universal email app, capable of managing unlimited number of mail accounts from various providers, allowing for smart push notifications while enabling personalization across multiple email accounts.
    Showing 10 of 24 alternatives