[keycloak-user] Email is unique within one realm

Hello, the email address is unique within one realm. Is there a possibility to fulfill the requirement to have different user (different usernames) for different applications within one realm which were managed and used by the same person/entity? For example: Username: I_Am_An_Admin Email: user@traveltainment.de<mailto:user@traveltainment.de> (gets roles for every client within the realm) Username: I_Am_A_Normal_User Email: user@traveltainment.de<mailto:user@traveltainment.de> (get roles from only one client within the realm) Is this unambiguity of the email address configurable? Thanks, Sebastian