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cketti 168e090846
Merge pull request #4154 from k9mail/MessageListAdapter_tests
5 days ago
.github Updated some links. 1 month ago
.tx Update Transifex configuration 6 months ago
app Merge pull request #4154 from k9mail/MessageListAdapter_tests 5 days ago
backend Add deleteMessages() method to Backend interface 5 months ago
config Disable some FindBugs checks (2) 2 years ago
docs correct comment 6 months ago
gradle Upgrade to Gradle (Wrapper) 5.3.1 4 months ago
images Add 'SettingsExportFragment' 3 months ago
mail Fix test in 'SmtpTransportTest' 2 months ago
plugins Fix crash when disabling OpenPGP support in settings 3 months ago
tools Update Transifex fixup script 6 months ago
.gitattributes Force gradlew (and other shell scripts) to use lf line endings. 4 years ago
.gitignore Exclude DS_Store 1 year ago
.gitmodules Kill our use of submodules dead. They're too painful for new contributors 6 years ago
.travis.yml Fix Travis CI build 2 weeks ago
LICENSE Fix LICENSE on GitHub (#1712) 2 years ago
NOTICE Fix LICENSE on GitHub (#1712) 2 years ago Remove link to Google+ community from README 4 months ago
build.gradle Add 'SettingsExportFragment' 3 months ago Switch to androidx artifacts 6 months ago
gradlew Upgrade to Gradle (Wrapper) 5.3.1 4 months ago
gradlew.bat Upgrade to Gradle (Wrapper) 5.3.1 4 months ago
proguard.cfg Remove ActionBarSherlock 5 years ago
settings.gradle Create (empty) autodiscovery Gradle module 5 months ago

K-9 Mail

Build Status Latest release

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 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:


Thank you for contributing! If you’re unfamiliar with the code, start by reading the developer documentation

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.