You can use the Email Usage report to:
View details of all the transactional email notifications (such as, Appointment Confirmation, Appointment Reminder) sent by your center in a certain time period.
Status of the notifications (if delivered or not).
Verify if an email address that a notification was sent to and the email address that is currently associated with the guest profile is the same.
For details on how to use the report, click the following button: