> UI - simple, uncluttered mobile and desktop experience with uncomplicated keyboard shortcuts. It even had the little things like a satisfying sun animation when your inbox was empty! Desktop Gmail has a surfeit of widgets and add-on icons that perplex, distract, and confuse.

Just for this one in particular, you could try basic HTML mode for GMail: https://mail.google.com/mail/u/0/h/1pq68r75kzvdr/?v%3Dlui

But then of course you get even less features.