We have discussed passing an email as a user attribute. You can also pass any of the other built-in user attributes, such as name, given_name, family_name, middle_name, nick_name, preferred_username, profile, picture, website, email, email_verified, gender, birthdate, zoneinfo, locale, phone_number, phone_number_verified, address, and updated_at. You can also define a custom attribute.

We only discussed email verification in this recipe. You can add phone verification by adding it to the AutoVerifiedAttributes list. We also did user sign-up with a text username. We could have also used an email or phone_number as usernames. In a later recipe, we will create a user pool to support SMS and MFA verification, and to support user sign-up with a phone_number as a username.