K-9 Mail – Advanced Email for Android
Latest commit 921ee5c Jul 25, 2016 @cketti cketti Merge pull request #1513
Couple of broken message fixes
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.tx Update Transifex client configuration Dec 20, 2014
config Ignore GoogleAppIndexingWarning Feb 13, 2016
docs Remove outdated docs Dec 20, 2014
gradle Update to Gradle 2.12 Apr 22, 2016
images messageview: add crypto info dialog Jun 30, 2016
k9mail-library don't trust X_DOWNLOADED_FULL flag, consider messages with missing on… Jul 24, 2016
k9mail add handling for LocalMessage parts to AttachmentInfoExtractor Jul 25, 2016
plugins experimental update to openpgp api for cached session keys Jul 18, 2016
tools Use https to download SDK Jun 24, 2015
.gitattributes Force gradlew (and other shell scripts) to use lf line endings. Dec 3, 2014
.gitignore Remove old IntelliJ project files Mar 1, 2014
.gitmodules Kill our use of submodules dead. They're too painful for new contribu… Nov 24, 2012
.travis.yml Update build tools to 23.0.3 Apr 22, 2016
CONTRIBUTING.md Add first version of guidelines for contributing Aug 29, 2015
HTMLCLEANER_LICENSE Merge ashleywillis' changes in #97. Nov 14, 2011
NOTICE Initial commit - This source code should be EXACTLY what the current … Oct 28, 2008
README.md Updating links to manual and documentation May 8, 2016
build.gradle Update Android Gradle plugin to 2.0.0 Apr 22, 2016
gradlew Update to Gradle 2.9 Dec 22, 2015
gradlew.bat Add Gradle wrapper Nov 7, 2013
issue_template.md Optimize size of issue template Jun 13, 2016
proguard.cfg Remove ActionBarSherlock Jun 21, 2014
settings.gradle include openpgp-api-lib, again Jan 20, 2016


K-9 Mail

Build Status Join the chat

K-9 Mail is an open-source email client for Android.


K-9 Mail can be downloaded from a couple of sources:

You might also be interested in becoming a beta tester or an alpha tester to get an early look at new versions.

Release Notes

Check out the Release Notes to find out what changed in each version of K-9 Mail.

Need Help?

If the app is not behaving like it should, you might find these resources helpful:


Interested in helping to translate K-9 Mail? Contribute here:



Please fork this repository and contribute back using pull requests.

Any contributions, large or small, major features, bug fixes, unit/integration tests are welcomed and appreciated but will be thoroughly reviewed and discussed. Please make sure you read the Code Style Guidelines.


Aside from discussing changes in pull requests and issues we use the following communication services:


Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at


Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
See the License for the specific language governing permissions and
limitations under the License.


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