rich1.0சாரு-秋陽 (npub1qn…tl6rj)https://njump.me/npub1qn49n06hdwwyrtvdyymu2wx57jvhz7anmu20tgsdjjyae3zhwaxsjtl6rjnjumphttps://njump.meNom. I don't think it works that way. In fact, you can't even know if the other user has seen your message. The IP address I guess can be known if there's some image link and the person DMing you is hosting the image on their server, they can know which IPs have requested and downloaded it.