This makes me 😭
UPDATE: Thanks @[email protected] for this update: The issue has now been commented on and was closed by the maintainer, where they explained why those blocks would be nonsense. But it appears the OP wants to still talk with maintainer privately about it.
I am not sure I understood your comment. I am using protonmail (ultimate) and they do have free simplelogin integration (I think proton bought SL). Definitely catchall is my way to go for reputable sites, but SL is great for trash “register once” sites so that I don’t even disclose my domain!
Using a simplemail means you are bound to a provider, in this case ProtonMail.If you setup a custom domain you can ditch ProtonMail/Simplelogin duo domains and switch to a different provider whenever you want.