Not you ... I knew the answer. He clearly doesn't understand privacy on nostr. It's not a good protocol for reliable private messaging.

And that defines the gift wrapping scheme for nip44 which is used for NIP17 DMs and you better hope any other client involved doesn't switch to nip4 because it doesn't do NIP17. And you have to make sure you're signing the right thing. Oh and let's hope the two people talking are using clients that support outbox too otherwise they'll never see each other's messages unless they happen to be on the same relay. And unless it's a big public relay you have a very small anon set. Finding whose messaging on a private relay is easy (no you can't see what or who is messaging but you know the user base of your relay by their kind0s) Do you see my point? I know the protocol pretty well. I'm not expert but there are better solutions to private messaging right now.