K-9 Mail

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

Download

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:

Translations

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

K-9 Mail localization

Contributing

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.

Architecture Decision Records (ADR)

We use Architecture Decision Records to document the architectural decisions made in the development of K-9 Mail. You can find them in the docs/architecture/adr directory.

For more information about our ADRs, please see the ADRs README.

We encourage team members and contributors to read through our ADRs to understand the architectural decisions that have shaped this project so far. Feel free to propose new ADRs or suggest modifications to existing ones as needed.

Communication

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

Matrix: #tb-android:mozilla.org

License

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

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

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