Please allow users to select the columns in the mail layout (for both old classic mail, no javascript and new mail- I don't like new mail, not concentrated enough info- too spread out).

So for example, right now you have days going down Monday, Sunday, Saturday etc as separators. Lose the separators. Just have a plain date on the left. I don't need to know the day of the week. This isn't social media.

Devs, keep up the good work! :)