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Use cases → Scheduling

Bulk delete calendar events for canceled projects

Remove all meetings tied to a canceled project across many users’ calendars using delegated access, avoiding manual clean-up and missed removals.

Who it is forProject managers and IT admins responsible for project shutdowns or client offboarding.
APIsCalendar API
Typical scopescalendar

The problem

When a project or client is canceled, recurring and one-off calendar events linger, causing confusion and wasted meeting slots. Manual deletion is error-prone and rarely complete, especially for large teams or external guests.

How it works

  1. Identify all calendars and events linked to the project, typically by keyword, guest list, or organiser.
  2. Impersonate each affected user with the service account via domain-wide delegation.
  3. Batch-delete matching events, handling recurring series and single instances.
  4. Optionally notify organisers or participants of mass deletions.

What changes

Project-related meetings are fully removed from calendars in one operation, reducing confusion and freeing up time for all participants.

The trap in this one. The Calendar API’s batch deletion is not truly atomic: if you delete a recurring event, exceptions (modified instances) may persist unless explicitly deleted by their event IDs. These orphaned exceptions are easy to miss, especially when filtering by summary or organiser, and can confuse users who still see scattered meetings after the main series is gone.

Questions people ask

Can this remove both internal and external events?

It can remove events from your domain’s calendars, including those where external guests are invited, but cannot touch events only present in external calendars.

Does this break any audit trails?

Deleted events are gone from the user’s calendar, but activity logs in the Admin console can still show deletion actions for compliance purposes.

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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