In the message list/pane, there is quite a bit of excess space (when using Reading Pane mode). I would like the ability to compact the message list while in reading pane mode. Essentially, I would just like to be able to see more emails at once while in reading panel mode (the way you are able to in single panel mode). This could be accomplished either via sacrificing the message contents completely or just reducing the height of each email (or both). I believe this would be the view to use for ultimate productivity.
Also, is this something that could be accomplished with a custom theme? Any assistance is appreciated. Thanks!
(Originally posted by mph-code on GitHub.)