and most exit nodes are most likely runned by law inforcements

and why would you care about that? the protonmail site is using https (which is something that MO has criticised on the onion site for some reason), so the law enforcement would have what? the ip of the middle-node, the ip of the package-destination, and the date the package was sent? that’s not really that much metadata tbh.

anyways yeah we should switch away from email to something like matrix ASAP, but tbh that won’t happen anytime soon