You may want to refer to the following packages that are part of the same source:

Maintainers for thunderbird are Carsten Schoenert. 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.Debian Bug report logs: Bugs in package thunderbird (version 1:102.9.1-1) in unstable 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.

Thunderbird 78 google calendar