May I ask what do you use instead of Alby?

But is there any wallet service that doesn’t require email? And what if you use an encrypted, secure email? Or email alias?

Yes, I feel highly uneasy with the email part.

Email is also a protocol though and everyone should have it, even more people than facebook has

Our custodial wallet service require an e-mail to log you in to the dashboard and recover your access. However, our extension is open-source and doesn't require any e-mail or data to use Nostr with it. Also, your nsec private ey stays on your machine, Alby doesn't see your actions.

The extension won’t let me add a nostr key without giving you my email. Maybe that is an error?