Rated 3 out of 5 stars

le RickW ar MFómh. 22, 2023 ·

A good idea, but unfortunately as TB has made access to the unified toolbar in TB 115 very difficult, it appears not to work for TB 115.

le Lars Baum (Forbróir) ar MFómh. 28, 2023 ·

Hi Rick,
I daily drive Thunderbird 115.2.3 with this extension. It definitely works. Perhaps your installation is configured to hide the toolbar by default. Go to the top right hamburger menu, select View>Toolbars and check "Spaces Toolbar". Then the toolbar with the Proton Mail button will always be shown on the left side of the screen.

Sincerely
Lars