Would any of this be hard or impossible to replicate in proton mail
you can replicate that with a paid proton account by creating a new @ for every gmail forward you had but you have to ditch all those gmail accounts. You would have, like you want, a central protonMail account with it’s satellites.
"I could stand in the middle of 5th Avenue and shoot somebody, and I wouldn’t lose any voters. It’s, like, incredible.”