The email address, subject and date.
The menu items on the far right are not sized properly. The items displayed are only four, taking up space that could be used to set the size of the addressee, subject, and date to display more info. to the email user.
Why isn't the rectangle set "Horizontally"? Duh, and why can't users set the size, and orientation of the rectangles in this new 'feature' display?
Plus, the choice of display schema is very distracting from the previous view!
74th
ranked