Support username as both an email as today and a text string.
Should be disabled by default.
Can be enabled / disabled for an environment.
HRD is only passible based on a domain, if the user put in an email.
Should a user be able to have both an email and a username at the same time?
Should both email and username work as the 'username'?
Support username as both an email as today and a text string. Should be disabled by default. Can be enabled / disabled for an environment. HRD is only passible based on a domain, if the user put in an email.