I want to auth user whose identity verified with Auth0 component.
Therefore, I want to verify the identity of the user by MFA (SMS, Email, etc.) with Auth0.
So I read that document. https://auth0.com/docs/users/verify-emails
But this document says Auth0 doesn’t recommend using an email as a way to validate that a user.
Auth0 does not recommend using an email address as a way to validate that a user is who they say they are.
What method as a way to validate that a user is who they say they are is recommended in Auth0?