However, there is little movement in the desktop email app space anymore, so aside from their web app, I see no other clients supporting this.
Evolution added some nifty features lately (Markdown integration). And allows to use Client-Side-Decoration annd classic menus - usability wise awesome. Thunderbird got this year a complete redesign.
The other part are we as users.
However, there is little movement in the desktop email app space anymore, so aside from their web app, I see no other clients supporting this.