Open Source K-9 Mail Alternatives for Android

    There are many alternatives to K-9 Mail for Android if you are looking for a replacement. The best Android alternative is Microsoft Office Outlook. It's not free, so if you're looking for a free alternative, you could try FairEmail or Spark. If that doesn't suit you, our users have ranked more than 25 alternatives to K-9 Mail and 15 is available for Android so hopefully you can find a suitable replacement. Other interesting Android alternatives to K-9 Mail are Delta Chat (Free, Open Source), BlueMail (Free Personal), TypeApp (Free Personal) and Canary Mail (Paid).

    This page was last updated Sep 13, 2021

    1. FairEmail is a privacy-focused email client with a setup wizard that helpfully walks you through the steps to use it with any email provider. There are many privacy settings including encryption via OpenPGP and S/MIME and reformatted emails to avoid phishing.
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      Almost everyone thinks FairEmail is a great alternative to K-9 Mail.
    2. Delta Chat looks and feels like other popular messenger apps, but does not involve centralized control, tracking or selling you, friends, colleagues or family out to large organizations. "Privacy by Design" has never been more fun.


      • FreeOpen Source
      • Android
      • Android Tablet
      • PureOS (Purism)
      Librem Mail – end-to-end encrypted email used by nearly everybody already * Email client with support for IMAP and POP3 * Encrypt and sign your emails with OpenKeychain * Multiple accounts * Free and open-source software
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      • FreeOpen Source
      • Android
      Free Software, minimalistic and privacy friendly email app for Android.
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    Showing 4 of 4 alternatives