tal on Nostr: Definitely, that was my first idea. But I'm pondering if there's a method that fits ...

Definitely, that was my first idea. But I'm pondering if there's a method that fits this scenario better. Instead of providing an app access to all decrypted dms, how about granting access only to particular necessary (unencrypted) keys? It'd also be a more precise and secure way to share private data across apps.