See Task Type At A Glance By Adding The Icon Column To The Outlook 2007 To Do Bar
This isn’t really a hack, it’s just a useful setting tweak that hadn’t occurred to me before, so I figured I’d write it up for everybody. Now you can see at a glance that one of the items is from your task list, and the others are emails that were flagged for followup: Adding the Icon Column to the To-Do List View Just right-click on the column list and choose Custom…...