Non-unique emails GA; requires username or phone identifier

Non-Unique Emails is now Generally Available (GA) for all Auth0 customers. This feature allows multiple user accounts to share the same email address within a database connection, supporting real-world use cases like families, small businesses, and multi-role users who need separate accounts tied to the same email.

Key Details:

• Available on new database connections only (cannot be enabled on existing connections).
• Requires a different primary identifier (username or phone number) to uniquely distinguish users.
• All email communications (verification, password reset, etc.) are still sent to the shared email address.
• Once enabled on a connection, the non-unique email setting is permanent.

Documentation: Non-Unique Emails