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https://github.com/thunderbird/thunderbird-android

K-9 Mail – Open Source Email App for Android
https://github.com/thunderbird/thunderbird-android

android communication email

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K-9 Mail – Open Source Email App for Android

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README 

        
# Thunderbird for Android



Get it on Google Play

[![Latest release](https://img.shields.io/github/release/thunderbird/thunderbird-android.svg?style=for-the-badge)](https://github.com/thunderbird/thunderbird-android/releases/latest)

[![Latest beta release](https://img.shields.io/github/v/release/thunderbird/thunderbird-android.svg?include_prereleases&style=for-the-badge&label=beta&filter=THUNDERBIRD_*&logo=thunderbird)](https://github.com/thunderbird/thunderbird-android/releases)



Thunderbird for Android is a powerful, privacy-focused email app. Effortlessly manage multiple email accounts from one app, with a Unified Inbox option for maximum productivity. Built on open-source technology and supported by a dedicated team of developers alongside a global community of volunteers, Thunderbird never treats your private data as a product.



Thunderbird for Android is based on K-9 Mail, which comes with a rich history of success and functionality in open source email.



## Download



Thunderbird for Android can be downloaded from a couple of sources:



- [Thunderbird Beta on Google Play](https://play.google.com/store/apps/details?id=net.thunderbird.android.beta&utm_source=thunderbird-android-github&utm_campaign=download-section)

- [Github Releases](https://github.com/thunderbird/thunderbird-android/releases)

- F-Droid coming soon



By using Thunderbird for Android Beta, you have early access to current development and are able to try new features earlier. The final release for Thunderbird [is coming soon](https://blog.thunderbird.net/2024/09/help-us-test-the-thunderbird-for-android-beta/)!



Check out the [Release Notes](https://github.com/thunderbird/thunderbird-android/releases) to find out what changed in each version of Thunderbird for Android.



## Need Help? Found a bug? Have an idea? Want to chat?



If the app is not behaving like it should, or you are not sure if you've encoutered a bug:



- Check out our [knowledge base and frequently asked questions](https://support.mozilla.org/products/thunderbird-android)

- Ask a question on our [support forum](https://support.mozilla.org/en-US/questions/new/thunderbird-android)



If you are certain you've identified a bug in Thunderbird for Android and would like to help fix it:



- File an issue on [our GitHub issue tracker](https://github.com/thunderbird/thunderbird-android/issues)



If you have an idea how to improve Thunderbird for Android:



- Tell us about and vote on your feature ideas on [connect.mozilla.org](https://connect.mozilla.org/t5/ideas/idb-p/ideas/label-name/thunderbird%20android).



The Thunderbird Community uses Matrix to communicate:



- General chat about Thunderbird for Android and K-9 Mail: [#tb-android:mozilla.org](https://matrix.to/#/#tb-android:mozilla.org)

- Development and other ways to contribute: [#tb-android-dev:mozilla.org](https://matrix.to/#/#tb-android-dev:mozilla.org)

- Reach the broader Thunderbird Community in the [community space](https://matrix.to/#/#thunderbird-community:mozilla.org)



## Contributing



We welcome contributions from everyone.



- Development: Have you done a little bit of Kotlin? The [CONTRIBUTING](docs/CONTRIBUTING.md) guide will help you get started

- Translations: Do you speak a language aside from English? [Translating is easy](https://hosted.weblate.org/projects/tb-android/) and just takes a few minutes for your first success.

- We have [a number of other contribution opportunities](https://blog.thunderbird.net/2024/09/contribute-to-thunderbird-for-android/) available.

- Thunderbird is supported solely by financial contributions from users like you.[Make a financial contribution today](https://www.thunderbird.net/donate/mobile/?form=tfa)!



### Architecture Decision Records (ADR)



We use [Architecture Decision Records](https://adr.github.io/) to document the architectural decisions made in the

development of Thunderbird for Android. You can find them in the [`docs/architecture/adr`](docs/architecture/adr) directory.



For more information about our ADRs, please see the [ADRs README](docs/architecture/adr/README.md).



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.



## Security



The code in this repository was undergoing an extensive security audit in collaboration with the Open Source Technology

Improvement Fund ([OSTIF](https://ostif.org/)) and [7ASecurity](https://7asecurity.com/) in the first half of 2023. For

more details, see

our [blog post](https://blog.thunderbird.net/2023/07/k-9-mail-collaborates-with-ostif-and-7asecurity-security-audit/).



You can report a security vulnerability [through the respective issues form](https://github.com/thunderbird/thunderbird-android/security/advisories/new).



## K-9 Mail



Thunderbird for Android is continuing the precious work the K-9 Dog Walkers have started. If you'd like to try K-9 Mail as well, you can find it at:



- [K-9 Mail on Google Play](https://play.google.com/store/apps/details?id=com.fsck.k9&utm_source=thunderbird-android-github&utm_campaign=download-section)

- [K-9 Mail on F-Droid](https://f-droid.org/repository/browse/?fdid=com.fsck.k9)



## Forking



If you want to use a fork of this project please ensure that you replace the OAuth client setup in the `app-k9mail/src/{debug,release}/kotlin/app/k9mail/auth/K9OAuthConfigurationFactory.kt` and `app-thunderbird/src/{debug,daily,beta,release}/kotlin/net/thunderbird/android/auth/TbOAuthConfigurationFactory.kt` with your own OAuth client setup and ensure that the `redirectUri` is different to the one used in the main project. This is to prevent conflicts with the main app when both are installed on the same device.



## 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.