Fall back to org_domains when no email_provider_domains default set

Shipped

April 21, 2026 at 5:27 AM UTC

Author

Kamo

Commit

2b90d9d

KamoMailDomainValidator was hard-failing with 403 for orgs that have a DNS-verified domain in org_domains but never added it to the email provider domain registry. Add a fallback that uses the first active, DNS-verified, top-level org_domain so orgs can create mailboxes without a separate domain registration step.