A customer will automatically receive a reservation email under the following circumstances:
A reservation is made
Reservation status changes from Pending to Confirmed or Confirmed to Cancelled
Start date/time or end date/time is changed
The product has been changed
In any of these circumstances a reservation email is automatically sent to the customer. In addition to the emails automatically sent to customers, you will receive a notification email whenever a new reservation is made.
For more information about Email notifications, click here