(91,954 ratings)
  • Updated password input fields to be able to reveal passwords
  • Added support for going back to previous steps when setting up an account
  • Fixed a couple of crashes
  • Updated translations

K-9 Mail is an open source email client with support for multiple accounts, search, IMAP push email, multi-folder sync, flagging, filing, signatures, BCC-self, PGP/MIME & more!

K-9 supports IMAP, POP3 and Exchange 2003/2007 (with WebDAV).

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

K-9 is a community developed project. If you're interested in helping to make the most popular open source email client on Android even better, please join us! You can find our bug tracker, source code, mailing list and wiki at
We're always happy to welcome new developers, designers, documenters, bug triagers and friends.

If you're having trouble with K-9, please report a bug at rather than just leaving a one-star review. We don't mind you telling the world that you're frustrated, but if you use our bug tracker, we have a better chance of fixing whatever's giving you a hard time.

You can find K-9's release notes at:


This release may come in several variants. Consult our handy FAQ to see which download is right for you.

27026 APK
January 6, 2021
Android 5.0+
All Releases
January 6, 2021
November 18, 2020
November 1, 2020
October 31, 2020
October 21, 2020
October 8, 2020
October 7, 2020
October 4, 2020
August 18, 2020
June 20, 2020