Gotta go for ProtonMail. Have been running it for a year and I kinda like how it's doing.

An additional feature is SimpleLogin's "Hide My E-mail" Aliases, which are "burner" e-mail addresses to use with pre-determined SimpleLogin domains (you can add your own domains as well to go around Proton's custom domain limit). Those are included in the full suite and Family subscriptions. (10 a month when subscribing for a year)

There's also a cheaper variant for 3.50 a month but it lacks the SimpleLogin feature. You can get SimpleLogin seperately for 30 a year, however.