Protonmail customer here. Sigh. This is why I keep my own domain and can point it wherever I need. Dear Protonmail, email is fucking cheap and easy, I pay you $58 a year to solve stupid shit like this. Vendors really need to figure out how to thread the needle of "No don't trust us" but still encourage customers to buy. Protonmail failed here. Apple's still very much in the "trust no one but us!" vibe, and it's just…
If you were relying on Protonmail to conceal evidence of criminal activity for you, you may not have thought that all the way through.