Since in Nostr we don't collect emails on signup, I like the idea of opting into subscribed notifications in DMs or in the notifications field.
This creates another loop within products and allows y...
This doesn't mean you can't display the content directly inside the client too, but as long as it has its own feed and you can clearly tell what you've read and what you haven't. And a standalone client optimized for that experience (perhaps with paid subscription option) on top of that.