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Use casesAdmin and governance

Centrally enforce email retention policies across all mailboxes

Apply and audit retention rules on every user account using a delegated service account, ensuring compliance without relying on end-user behaviour.

Who it is forCompliance officers and IT admins responsible for regulatory retention requirements.
APIsGmail API, Admin SDK
Typical scopesgmail.modify, admin.directory.user

The problem

Retention rules set in the admin console are not always enforced at the message level, especially for legacy or migrated mail. Relying on users to manage retention is unreliable and non-auditable, exposing the organisation to compliance risk.

How it works

  1. Enumerate all user accounts with the Admin SDK.
  2. Impersonate each user with the service account and use the Gmail API to scan for messages outside retention windows.
  3. Apply labels or delete messages in violation of the defined policy.
  4. Log every action to a central audit sheet for review.

What changes

Emails are retained or purged as required, regardless of user behaviour, and every enforcement action is centrally logged for audit.

The trap in this one. Gmail API's batchDelete and batchModify endpoints are subject to per-user and per-day quota limits, but these limits are not surfaced until the batch request fails. When processing large domains, enforcement can silently skip users if your job logic does not handle 429 rate limit errors and retry with backoff. This results in partial compliance with no immediate signal unless you explicitly track failures and rerun.

Questions people ask

Does this catch emails restored from Trash or imported via migration tools?

Yes, as long as the enforcement job scans all folders and runs regularly. However, messages moved in after the last scan can still exist for a window.

Can retention logic be adjusted per-organisational unit?

Yes, but you must read OU membership per user and apply policy logic accordingly in your enforcement code.

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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