nostr:npub133rqpg3uqnz5rhlz7ly6g0zmzf4wcmv2phctcfhyq54sgvc4ykdqek77h2 so for personal details - I wouldn’t use the DM function. I don’t think it is encrypted.
On the official iOS app, when you are posting, click on the globe icon and the menu that pops up, select the “only people I follow”. That will send your message to only the person you are DMing. The message will only show in you and the intended persons timelines and notifications.
