i don’t think nostr:npub1w27mc4aa6m0ufe3xs5z3m6qyr52gc0rglept7vqlwx4xeaf72tasnqz70r requires u to use email. I think that’s an option for password resetting and for email notifications. you can sign up directly using your Nostur account “sign in with Nostr” or just a username and password.
i don’t work at coinos.