In order to be able to build Thunderbird - you will need the mozilla-central repository as well as the comm-central repository (where this README lives).

As such the two projects share a lot of code and much of the documentation for one will apply, in many ways, to the other. Thunderbird is built on the Mozilla platform, the same base that Firefox is built from. 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. It is based on the same platform that Firefox uses. However, Thunderbird started to decline after Mozilla moved some of its developers to other projects in 2012, and then cut off most funding in 2015 - leaving Thunderbird’s future entirely up to independent donations.Thunderbird is a powerful and customizable open source email client with lots of users. Mozilla originally created Thunderbird alongside the Firefox web browser, with both applications serving as a replacement for the older Mozilla Suite. There’s even an Android app in development. Color-coding for emails is expected to arrive in Thunderbird v114, a universal font size setting is in the works, and some icons are being updated. Thunderbird’s developers have also been answering questions and feature requests, though many of the planned improvements won’t show up for many months. Spaces toolbar (far left side) Thunderbird The account setup process and import/export wizard are being revamped, too, and there’s early support for Matrix messaging directly in Thunderbird.

Thunderbird is also working on a new (optional) ‘Spaces Toolbar’, which acts like a tab bar for all of the app’s features, similar to Outlook on the web. The address book will have a refreshed design, with related information divided into cards for easier reading. The Thunderbird team revealed its plans for version 102 in a blog post earlier this month, with the update expected to arrive by the end of June 2022.

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