Event Reservation Warning: Some of the schemas used by Gmail are still going through the standardization process of schema.org, and therefore, may change in the future. Learn More. Use this type to declare a reservation for one or more guests at an event. Tickets may be declared as well. Use cases The following use cases show common examples of how the EventReservation schema is used. Use these examples to ensure that you markup is properly structured. Note: Before you start, make sure you understand how to embed schemas in emails and you are familiar with testing schemas. Basic event reminder without a ticket If you are sending out an email confirming a user’s attendance to an event, include the following markup. Google Now will remind the user on the day of the event. The user will receive a time to leave reminder (based on traffic etc). This is an example of the minimal amount of markup that will qualify your email as an EventReservation. JSON-LDMICRODATA