49th rankedAnonymous commented
The classic email offered the ability to add a filter in a couple of clicks by auto-populating values based on an existing email. This made creating new filters very easy.
It's the reason I stayed with classic mail until the end.
You've made this so much harder now! You almost have to get a pen and paper out and write down the details of an existing mail, go through 3 or 4 menus until you can click "add new filter" and type in the necessary details.