Under Settings > Interface you can set Table row font size to be larger, but you cannot make it smaller. I would like to be able to shrink it down some. I suspect I am not the only one.
How small would you like to have it?
Have my messages at 13 point. With the bold for unread I would like 12-13 point. Looks closer to 14-15 now.
The smallest is 13 pixels.
I've added an ever smaller font size for the table rows. Will be available in the next update.