Funny enough, they mention moving to ProtonMail which is at least based out of Switzerland. It makes this whole chain a bit funny, but I don't blame the commenter for not breaking down every service the OP talked about and the OP did shorthand it to "Migrating to the EU", so fair enough.

Servers of migadu are in france actually

Didn't proton fold like a wet napkin when they were asked for information about their users? What I mean is: Switzerland as a whole is probably the wrong metric...