K-9 Mail APK

Version 5.902 - com.fsck.k9
Last updated: Tue, 21 Sep 2021 11:21:30 UTC

K-9 Mail is a 100% free and open source email client for Android.

K-9 Mail apk

APP Information

Download Version 5.902 (29002)
Apk Size7.26 MB
App DeveloperK-9 Dog Walkers
Malware CheckTRUSTED
Install on Android5.0 and up
App Packagecom.fsck.k9.apk
Website https://k9mail.github.io/

Download K-9 Mail 5.902 APK

App Description

K-9 Mail is fsck,communication,mail, content rating is Everyone (PEGI-3). This app is rated 4.21 by 42 users who are using this app. To know more about the company/developer, visit K-9 Dog Walkers website who developed it. com.fsck.k9.apk apps can be downloaded and installed on Android 5.0 and higher Android devices. The Latest Version of 5.902 Available for download. Download the app using your favorite browser and click Install to install the application. Please note that we provide both basic and pure APK files and faster download speeds than APK Mirror. This app APK has been downloaded 211418+ times on store. You can also download com.fsck.k9 APK and run it with the popular Android Emulators.

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 https://forum.k9mail.app
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 https://github.com/k9mail/k-9
We're always happy to welcome new developers, designers, documenters, translators, bug triagers and friends. 

App ChangeLog

  • Fixed the check for missing outgoing server credentials, again… hopefully 🀞

App Screens

K-9 Mail App Screen 1K-9 Mail App Screen 2K-9 Mail App Screen 3K-9 Mail App Screen 4K-9 Mail App Screen 5K-9 Mail App Screen 6K-9 Mail App Screen 7

Older Versions

More Android Apps to Consider

Google Play Reviews

  1. Daniel AJ Sokolov-avatar

    Daniel AJ Sokolov

    K9 is a great email program for Android phones (small flaw: the search doesn't work for email addresses). However, it doesn't work well on Chromebooks. Doing the same thing (such as trying to mark text and copying it) works in the Inbox, but not in the Sent folder. Usualykey combinations such at Ctrl+C and Ctrl+V do not work. Etc.

  2. Neil Gregory-avatar

    Neil Gregory

    It was 5*, sadly not for migrating to Samsung S21 ultra. I have 13 mail accounts connected with k-9 on a Samsung Galaxy Note 8. Until now it always used the export / import facility to migrate from the old device to the new. This failed miserably when I tried to import into k-9 on a new Samsung Galaxy S21 Ultra, just crashed, installing 1 manually worked, but do I really have to do each manually! I even tried import after 1 manual setup, it still crashed. K-9 is still the best for me but...

  3. Peter Ramirez-avatar

    Peter Ramirez

    The interface is a mixed bag, but that's more than made up for through the sheer utility of the setting and customization options. Whereas something like Gmail is rather rigid and limited in terms of use cases, K-9 is the complete opposite. Use with Tasker to unlock maximum benefits

  4. Pieter Hoeben-avatar

    Pieter Hoeben

    Since a few days it crashes. Even after reboots. I just get a black screen. But just now it works again. For the rest a handy app.

  5. Pasty Chomper-avatar

    Pasty Chomper

    Excellent layout, reminds me of some of the better desktop IMAP clients. Includes per-account notifications, lights and colours. The only problem I've had is that Gmail sometimes (not always) refuses its connection when on mobile data. This doesn't happen on wifi or with Hotmail so I'm pretty sure the problem is of Google's making, probably part of their 'security' system that doesn't like non-OAuth clients.

  6. drayzen-avatar


    The best email app for power users. It has the occasional quirk or glitch, though that's normal for open-sourced projects, and there's the community you can go and discuss any issues with.. πŸ˜‰πŸ‘

  7. Zarathustra Mcalby-avatar

    Zarathustra Mcalby

    Great app but hasn't received updates in almost 3 years now. Wish it would get some updates because I have some security concerns using an app that hasn't been updated in so long and thus need to look for an alternative

  8. Wendy B-avatar

    Wendy B

    I've been using K9 mail happily for many years but my phone app just got updated to 5.6 and now every time I open the app to read an email, the page doesn't render correctly and seems to be shaking or in a loop. I have to navigate away and come back to get it to stop "shaking". It doesn't look like this app is being actively maintained anymore. I wish I hadn't updated. I think Google play updated wo my say so. The behavior is very annoying. (I think I have a paid version ...no ads)

  9. Tom Hindley-avatar

    Tom Hindley

    Brilliant app. Only downloaded it due to the Dr Who reference, but glad I did. Very easy to use, plenty of features which surprised me for a free app. This app has now replaced both Gmail and Samsung Mail. Would I recommend? "Affirmative, Master"

  10. Andrew Bennett-avatar

    Andrew Bennett

    Free, open source. It won't spy on you or track you. It may not be the easiest to set up, but given time to get it where you want it, it's pretty solid. Great IMAP implementation. Some mail services will need an app password to integrate with K-9. I have a dozen accounts configured - with the unified inbox, and been a happy user for over 10 years.