By default, both of these email notifications are not enabled. To enable, you must go to Event Details -> Notifications page.
Submission Accepted Email - This email will automatically sent to the submitter when their submission is marked as accepted. This feature can be enabled or disabled on the Notifications page by checking the box for “Submission Accepted Email”, and selecting which email template you'd like to use for that notification.
Submission Denied Email - This email is automatically sent to the submitter when their submission is marked as denied. This feature can be enabled or disabled on the Notifications page by checking the box for “Submission Denied Email”, and selecting which email template you'd like to use for that notification.