One of the great timesavers for me using Unread Folders was the ability to flip through the folders quickly, scanning the subject lines for things of interest.
After finishing, I would select all the folders with remaining, unread messages, and mark them as read.
The new version has removed that capability. Only one folder can be selected at a time.
Marking the contents of 30 or 40 folders takes a ridiculously long time, as each must be selected individually.
Please bring back the ability to select multiple folders in Unread Folders view so that multiple folders can be marked as read at one time