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Use cases → Admin and governance

Synchronise an external contact directory into Google Workspace

Keep an external or master contact directory in sync with Google Workspace global contacts using a delegated service account.

Who it is forAdmins responsible for keeping Workspace contacts aligned with a central HR or CRM system.
APIsAdmin SDK
Typical scopesadmin.directory.customer, admin.directory.user, admin.directory.domain

The problem

Many organisations have a canonical contact source outside Workspace. Users expect autocomplete, address book and sharing to reflect it, but manual imports fall out of date and point-in-time scripts miss removals or updates.

How it works

  1. Extract the authoritative contact list from the master system, including unique external identifiers.
  2. Fetch the complete existing Workspace directory using the Admin SDK, paginating through all contacts.
  3. For each contact: create new, update changed, or delete removed entries to match the source.
  4. Log every mutation with the external identifier and result for audit and reconciliation.
  5. Schedule regular runs and alert on API quota or sync failures.

What changes

Workspace users see a live, accurate contact directory that matches the master source, with changes reflected automatically and traceably.

The trap in this one. The Admin SDK's Contact API performs eventual, not immediate, updates: recent changes may not be visible to subsequent reads for several minutes. If your sync logic assumes a read-after-write guarantee, repeated runs can thrash or revert changes. Always operate from your own extracted state, and never fetch-then-patch within the same run.

Watch it explained

“Odoo Google Integration | Sync Users, Contacts & Tasks with Google Workspace” — echoBitz IT Solutions Private Limited on YouTube. Third-party video, included because it covers this ground well. We are not affiliated with the channel.

Questions people ask

Can I rely on the Admin SDK to de-duplicate contacts?

No. You must track your own external identifiers, as the API does not prevent silent duplication if two runs create the same contact in parallel.

How can I handle large directories efficiently?

Page through the directory with exponential backoff for rate limits, and batch writes where possible to avoid throttling.

Want this built?

This is a pattern we run in production. We will set up the delegation and build this on top of it — $500 per hour, most of it working the same day.

Talk to us Or read the setup guide

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