The three things we are working on to speed up multiple message delete performance are: 1) use tree batching, to prevent the scrolling of the thread pane after ever delete. [sspitzer, using hyatt's tree batching apis] 2) batch the updates to the unread count in the destination folder. we currently do this for the source folder, but we don't do it for the destination folder. [sspitzer] 3) avoid starting and stopping the throbber (and displaying status information) on every delete. [bienvenu] -Seth
