Can't Do Without This Add-on! Rated 5 out of 5 stars

QuickFolders keeps getting better and better. QuikFolders provides an invaluable alternative view into your mail folder structure. People who use mail seriously invariably end up with myriad storage folders in a complex tree hierarchy; and that hierarchy and the Tree view are indispensable. But navigating a complex tree structure over and over, to the same deeply located folders, can be tiring. It's repetitive, and can be laborious. QuickFolders provides the missing UI element, a system of visible graphical shortcuts to the folders you choose, using the ubiquitous and widely understood tab metaphor. And, QuickFolders helps rationalize your folder organization tree and its major branches, by providing a top level category organization. You can create slices into the virtual mail database represented by your folders and folder tree, but creating QuickFolder categories, and assigning them to chosen QuickFolder shortcut tabs. QuickFolders is well maintained, consistently updated, always fixed. It keeps up with the TBird updates, and always works.I recommend QuickFolders, and hope to see it continue to be maintained across operating systems. Really, a great tool. A great add-on.

This review is for a previous version of the add-on (3.10).