Currently the shortest is 15 mins. While a direct push would be great adding an option for the push frequency to 5 mins would be quite helpful. In a corporate environment, 15min is a long time.
Currently, you can set the theme (dar/light/system) in Thunderbird for Mobile. Yet, regardless of the choice, the widget is always in light theme. It should adjust to the theme setting as the rest of the app.
There is a menu entry for clearing the trash ("Empty Trash"). It would be great to have something similar for Spam ("Empty Spam"). Currently one has to manually go through the spam folder of each account....
