You can configure your notifications by clicking Configuration in the shop management panel menu and then clicking Notifications.
Customers are sent a notification e-mail when they place an order, and will receive additional e-mails if you update the order and choose to inform them.
This is an e-mail address that is notified whenever an order is placed. If you use stock control you will also be notified when the stock level for a product falls below the limit you have set. If you require customer accounts to be approved you will also be notified when a potential customer applies for an account.