Sorry, I didn't mean to discourage you from providing feedback.
Some nip05 services also provide email service using the same name, but not sure if that's relevant here. 
The nip05 and password can be used to sign in to (soon to be) any nostr client using nsec.app or other nip46 implementations. Try signing up on nsec.app (or import your relay keys there) and then you can use your name@nsec.app to sign in to nostr clients like Nostrudel, Snort, Habla etc.