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Use cases → Reporting and data

Sync bulk Google contacts to your CRM

Use a delegated service account to export and synchronise Google contacts in bulk to a third-party CRM, maintaining consistency across systems.

Who it is forIT or automation teams responsible for aligning user contact data between Google Workspace and a CRM.
APIsAdmin SDK
Typical scopesadmin.directory.user.readonly, admin.directory.user.readonly.contact

The problem

Contact details in Google Workspace and the CRM diverge over time, leading to missed updates, communication errors, and duplicate records. Manual export/import is error-prone and quickly falls out of date.

How it works

  1. Authenticate with a domain-wide delegated service account.
  2. Enumerate all users and fetch their contact data via the Admin SDK.
  3. Transform contact entries to match the CRM's format and schema.
  4. Push updates to the CRM in batches, tracking changes by unique identifiers.
  5. Log sync status and mismatches for review.

What changes

Contact changes in Google Workspace are reliably reflected in the CRM, reducing manual effort and data drift.

The trap in this one. The Admin SDK's contacts API does not guarantee immediate consistency after updates—recent changes may be missing for several minutes. If you sync on a tight schedule, you risk propagating stale or incomplete information to the CRM, especially after bulk edits or directory changes. There is no webhook or push notification for contact updates, so polling too often increases quota consumption without guaranteeing freshness.

Questions people ask

Can we sync both ways between Google Contacts and the CRM?

Google's Admin SDK only exposes user directory contacts, not personal or delegated contacts. Bi-directional sync requires additional endpoints and careful reconciliation logic.

How do we track deletions?

The API does not provide a deletion log; you must maintain your own state and compare each full export to detect removals.

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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