Google Calendar can show events such as reservations and flights, that Gmail creates from messages you receive. Your calendar now shows this event from Gmail:
- Reservation at Bird and Jim on Sun Dec 21, 2025 at 5:45pm - View
Only you can see an event from Gmail unless you change the event's visibility. You can also change the default visibility of events from Gmail in Calendar settings.
To stop seeing these events in Calendar or change their default visibility, go to Events from Gmail in Calendar settings. To stop Gmail from creating these events, you must also turn off Smart features and personalization in Gmail settings. Learn more about events from Gmail and how to control them.
This is the only notification you’ll get about events from Gmail. In the future, Calendar won’t send you an email when Gmail creates a new event. | 
