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…

 

Then click on the Fields button…

And then add the Icon column from the left side, and make sure you use the “Move Up” option to move it to the top of the list on the right-hand side.

It’s a really simple tip, but very helpful!