(95,001 ratings)
  • Fixed a bug that was triggered when Push was enabled, but the server didn't support Push. If you've noticed high battery drain, this was probably it
  • Added support for archive and spam actions in the Unified Inbox
  • Fixed notification sounds/vibration. Sometimes notifications were audible when they shouldn't have been, sometimes the other way around
  • Display the star of starred messages in yellow
  • Don't show archive/spam action when no such folder is configured
  • Fixed a crash when saving a draft message with modified signature text
  • Fixed a crash when refreshing attachment previews

K-9 Mail is an open source email client that works with basically every email provider.


* supports multiple accounts
* Unified Inbox
* privacy-friendly (no tracking whatsoever, only connects to your email provider)
* automatic background synchronization or push notifications
* local and server-side search
* OpenPGP email encryption (PGP/MIME)

Install the app "OpenKeychain: Easy PGP" to encrypt/decrypt your emails using OpenPGP.


If you're having trouble with K-9 Mail, ask for help in our support forum at

Want to help?

K-9 Mail is a community developed project. If you're interested in helping to improve the app, please join us! You can find our bug tracker, source code, and wiki at
We're always happy to welcome new developers, designers, documenters, translators, bug triagers and friends.

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5.802 APK
August 4, 2021
Android 5.0+
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