Allow user to customize UI a bit more, specifically in compact mode I'd like to be able to switch the side that the preview thumbnail is on.
I whole heartedly agree with this one.
Personally, I’d really appreciate the option for the theme to automatically switch between day/night modes based on system settings.
Also, would love to see a little pop up on the inbox at least notifying me that I have messages, if not the number of them as well.