Just a note that it’s now also available on F-Droid

https://f-droid.org/packages/net.thunderbird.android/

Note that -

Operated by MZLA Technologies Corporation, a subsidiary of the Mozilla Foundation, Thunderbird is an independent, community-driven project that is managed and overseen by the Thunderbird Council, which is elected by the Thunderbird community.

source: https://en.wikipedia.org/wiki/Mozilla_Thunderbird

Thunderbird 128 ESR has a really nice/modern look. Besides, if you don’t like the default look, you have plenty of themes to use with.

shh…it’s a spyware and adware!

Seems to have some severe bugs: https://github.com/wasi-master/13ft/issues

Just installed it, and my initial impression -

• Thanks for dark mode :)
• UI responsiveness is good.
• Need an option to increase/decrease width of reading pane.
• Need multiple themes like Wikipedia website.
• Require smooth scrolling (I’m on 240 Hz monitor but scroll doesn’t feel smooth on this app, though apparently uses GPU acceleration)