For sure, a contained nostr deployment is a very good idea, like for a company.

Nostr in the wild though is scary, you've probably not ventured far out there yet. You mentioned sending messages. How about *direct* messages? There are like 12 different DM specs on Nostr. You right now have no idea how to DM me. If you send me a NIP-04 DM will it work? Maybe you should try a NIP-17 DM also, just to be safe. Or maybe try me on Keychat? Or maybe MLS on White Noise, I could be on that. Or Maybe double ratchet on IRIS. Try them all and maybe, just maybe, I'll get your DM.