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Use cases → Email operations

Set out-of-office replies for all users centrally

Automate organisation-wide out-of-office messages by updating Gmail vacation responders via domain-wide delegation.

Who it is forIT or operations teams managing absence messaging for the entire organisation.
APIsGmail API
Typical scopesgmail.settings.basic

The problem

Coordinating out-of-office replies for hundreds or thousands of users is slow and error-prone when handled manually. HR-driven requirements for standardised messaging during holidays or disruptions require a central, automated method.

How it works

  1. Collect the list of target users and determine the desired out-of-office message and date range.
  2. Iterate through each user, impersonate them via the delegated service account, and call the Gmail API to set their vacation responder.
  3. Log each update attempt and capture any API errors for follow-up.
  4. Optionally, confirm the responder is active by fetching the settings after each update.
  5. Revert or update the responder as needed at the end of the relevant period.

What changes

All targeted users have a consistent out-of-office message applied quickly, with central logs for verification and auditing.

The trap in this one. The Gmail API applies vacation responder changes asynchronously: a successful response only means the change is queued, not applied. If you immediately read back the settings, they may still show the previous state for several seconds. Scripts that verify the change too quickly can produce false negatives, leading to unnecessary retries or missed updates.

Questions people ask

Can I set different messages for different teams?

Yes, but you must group users accordingly and apply the correct message per group in your automation loop.

Is there a way to see which users already have a responder set?

You can fetch each user's vacation settings with the Gmail API, but there is no bulk endpoint; each must be queried individually.

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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