Google Workspace Update

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Update Summary

Google Calendar API gains a transfer API and an organization filter for secondary calendars. The rollout starts June 18, 2026 for the transfer API and July 6, 2026 for the filter, with availability for all Google Workspace customers.

Update Details

New Features

  • New Calendar API endpoint lets admins transfer ownership of specific secondary calendars between users in the same organization without email confirmation.
  • New CalendarList:list filter returns only secondary calendars owned by the organization, helping admins monitor ownership status.

Hints

  • There is no admin control for this feature.
  • There is no end user setting for this feature.
  • Admins can combine CalendarList:list with users.list from the Admin SDK API and use the dataOwner field to verify ownership.
Product Information

Vendor: Google

Product: Workspace

Release date: Jun 18, 2026

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