rich1.0gil (npub18h…munfx)https://nostr.ae/npub18hzc2xqsjam4d0q74gperl56j2s9an9vjakkfkly3lxpd4kurqmsjmunfxnjumphttps://nostr.aeYes. And both parties have to use a client that supports this. In amethyst you can click the secret agent symbol when messaging someone.