To do this first you need to enable the Windows backup. To do that first search for
Recovery Services vaults > Backup Alerts >
Then select the configure notifications an enable Email Notifications and give the recipient email address of the Ticketing system or he alert dashboard.
You can set the method of notification and severity. Based on your selections you will be able to receive the alerts.
This is a small configuration that you need to do. But that will stop a future disaster.