If you don't like the original Thunderbird UI, try the new Thunderbird Supernova - https://www.thunderbird.net/en-US/download/beta/ https://www.thunderbird.net/

If you don't like the original Thunderbird UI, try the new Thunderbird Supernova - https://www.thunderbird.net/en-US/download/beta/ https://www.thunderbird.net/en-US/download/beta/ They are updating the UI, and doing a good job https://blog.thunderbird.net/2023/02/thunderbird-115-supernova-preview-the-new-folder-pane/ https://blog.thunderbird.net/2023/02/thunderbird-115-superno...