Very often I get an email that has too much content or too small a font to read in the Column view that I usually have enabled (because having to click into every email that comes in is insane). The only way to go "full screen" on the email is to switch into Row view. But I have to open up the settings (which further constrains limited laptop real estate), toggle, read my email, then toggle back, and hide settings.
If I could just quickly press some key combo to do the layout toggling, it would make reading my emails much easier. Thank you!