mozilla/releases-comm-central

Latest recorded source activity: October 2, 2026 at 18:51

SkillsMP catalog refreshed: November 2, 2026 at 18:02

skills collected: 1

GitHub stars: 195
GitHub forks: 116

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Repository README

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# Thunderbird Thunderbird is a powerful and customizable open source email client with many users. It is based on the same platform that Firefox uses. ## Getting Started This README will try and give you the basics that you need to get started, more comprehensive documentation is available on the [Thunderbird Developer Website](https://developer.thunderbird.net). We also have documentation from this repository in a rendered version at [Thunderbird Source Tree Documentation](https://source-docs.thunderbird.net/en/latest/). ### Mozilla Code Base Thunderbird is built on the Mozilla platform, the same base that Firefox is built from. As such, the two projects share a lot of code and much of the documentation for one will apply to the other. In order to be able to build Thunderbird - you will need the [Firefox repository](https://github.com/mozilla-firefox/firefox) as well as the [Thunderbird repository](https://github.com/thunderbird/thunderbird-desktop) (where this README lives). Check out our [Getting Started documentation](https://developer.thunderbird.net/thunderbird-development/getting-started) for instructions on how and where to get the source code. ### Firefox vs Thunderbird Source Code The Firefox repository contains the Firefox codebase and all of the platform code. The Thunderbird repository is added as a subdirectory "comm/" under Firefox. This contains the code for Thunderbird. ## Building Thunderbird Follow the [Building Thunderbird guide](https://developer.thunderbird.net/thunderbird-development/building-thunderbird) to get set up and build Thunderbird. ## Contributing ### Getting Plugged into the Community We have a complete listing of the ways in which you can get involved with Thunderbird [on our website](https://thunderbird.net/participate). Below are some quick references from that page that you can use if you are looking to contribute to Thunderbird core right away. #### Mailing Lists If you want to participate in discussions about Thunderbird development, there are two main mailing lists you want to join. 1. [**Thunderbird Planning**](https://thunderbird.topicbox.com/groups/planning)**:** This moderated mailing list is for higher level topics like: the future of Thunderbird, potential features, and changes that you would like to see happen. It is also used to discuss a variety of broader issues around community and governance of the project. 2. [**Thunderbird Developers**](https://thunderbird.topicbox.com/groups/developers)**:** A moderated mailing list for discussing engineering plans for Thunderbird. It is a place where you can raise questions and ideas for core Thunderbird development. #### Matrix Chat If you want to ask questions about how to hack on Thunderbird, the Matrix room you want to join is [\#maildev:mozilla.org](https://matrix.to/#/#maildev:mozilla.org?web-instance%5Belement.io%5D=chat.mozilla.org). ### Report a Bug and Request Features Thunderbird uses [Bugzilla](https://bugzilla.mozilla.org/enter_bug.cgi?product=Thunderbird) for reporting and tracking bugs. If you want to become a contributor to Thunderbird, you will need an account on Bugzilla. Feature requests should be submitted to [Mozilla Connect](https://connect.mozilla.org/). ### Fixing a Bug and Submitting Patches See [Fixing a Bug in the developer documentation](https://developer.thunderbird.net/thunderbird-development/fixing-a-bug).

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migrating-ui-strings-to-fluent

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Use when moving comm-central UI strings from legacy properties or DTD resources (string bundles, preference panes, dialogs) into Fluent (FTL), when reviewing such a migration or its recipe, or when updating the consumers, packaging, or tests involved in a…

2026-10-02

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