Automated Enterprise Cross-Tenant Migration Engine (Mail, Drive, Contacts, Calendar)
Configure Service Account JSON keys with Domain-Wide Delegation in both source and destination Google Workspace Admin consoles.
Automatically clone source users into destination tenant with identical display names, first/last names, and temporary passwords.
Run automated high-fidelity data migration via official REST APIs. Maintains dates, labels, folder structures, and recurrence.
Once all data is migrated, add and verify thirddomain.com in source Google Workspace Admin console (Account > Domains > Manage Domains).
Automate renaming of all users from @primarydomain.com to @thirddomain.com, delete automatic aliases, and audit Google Groups.
Confirm that zero users, aliases, or groups are attached to primarydomain.com, then remove/delete it from source tenant Admin Console.
Immediately add and verify primarydomain.com as a secondary domain in the destination tenant Admin Console.
Switch all destination users from @justanydomain.com to @primarydomain.com to restore their original email identities.