Is there an existing issue for this?

• I have searched the existing issues

Current Behavior

The extension doesn't redirect users when they exist in Keycloak but don't have email address set.

If the email attribute is null, DomainExtractor.extractFrom(UserModel user) returns empty and the discovery fails. DomainExtractor.java:18-24

Expected Behavior

Users without email address should be redirected to linked IdPs.

Steps To Reproduce

1. Disable require email. Realm settings > User profile > email > Required field
2. Configure extension as part of browser flow
3. Log in as user without an email set

Version

- Keycloak: 26.6.3
- This extension: 26.2.1

Anything else?

No response