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cketti 1940d0c31b Prepare for version 5.703 2 days ago
.github Add link to GitHub Sponsors to FUNDING.yml 1 month ago
.idea/codeStyles Add ktlint and Kotlin code style settings for Android Studio 2 weeks ago
.tx Update Transifex configuration 10 months ago
app Prepare for version 5.703 2 days ago
backend Open connection before attempting to download message via POP3 3 days ago
config/lint Remove Checkstyle 1 month ago
docs correct comment 10 months ago
gradle/wrapper Update to Gradle 6.0.1 3 weeks ago
images Add 'SettingsImportFragment' 1 month ago
mail Convert 'EncoderUtilTest' to Kotlin 3 days ago
plugins/openpgp-api-lib Remove HoloColorPicker 3 weeks ago
tools Update Transifex fixup script 10 months ago
.gitattributes Force gradlew (and other shell scripts) to use lf line endings. 5 years ago
.gitignore Exclude DS_Store 2 years ago
.gitmodules Kill our use of submodules dead. They're too painful for new contributors 7 years ago
.travis.yml Run ktlint on Travis CI 2 weeks ago
LICENSE Fix LICENSE on GitHub (#1712) 3 years ago
NOTICE Fix LICENSE on GitHub (#1712) 3 years ago Remove link to Google+ community from README 8 months ago
build.gradle Add ktlint and Kotlin code style settings for Android Studio 2 weeks ago Set max heap size for Gradle daemon because the default is too low 2 weeks ago
gradlew Update Gradle (Wrapper) to 6.0 1 month ago
gradlew.bat Update Gradle (Wrapper) to 6.0 1 month ago
proguard.cfg Remove ActionBarSherlock 5 years ago
settings.gradle Remove HoloColorPicker 3 weeks 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.