I know I am not the only one with 100+ folders for organizing my email. If I right-click and choose Move or I create a rule and choose Move as an option it is a pain to scroll (even with the center wheel to go through all of the folders).

I propose to keep what is there but add the ability to TYPE and the list start to filter. Example: If I have a folder called Zebras I should be able to type in BR and the list should only show the ones that contain everything with a BR in it (which Zebra does). I used this as the example as I don't want a STARTS WITH or a ENDS WITH but one that has a CONTAINS anywhere in the name.

So this feature would appear everywhere that a folder list appears within the system. It maintains the current functionality but also improves upon it for those with a few folders and those with many folders.