one line scrolling when reading pane is at bottom
It would be helpful to have one line scrolling when reading pane is located at bottom, instead of 3 at a time. I find it odd that when your reading pane is at the bottom, which consumes the majority of your space, and you are only viewing 5 or 6 messages at the top...scrolling one at a time is so much more effective. When the reading pane is to the side and you are displaying 10 to 20 messages the program allows you to scroll 1 at a time. That is where scrolling 3 at a time is more helpful. I think your programmers got the requirements reversed.