Here's a quick go at a Sort By Thread patch. http://www.graftonhall.co.nz/mikes/Horde%20Diffs/Sort%20By%20Thread/Head/ It adds a 'Sort by Thread' as a sort option in preferences and addes a 'Sort By Thread' option to the action bar There's an image there, of what it looks like to. The patch is for the HEAD version only. - Mike