Both you and your customers receive email notifications at key points in the order process.
For you (the seller)
You'll get an email every time a new order comes in. The email includes the order details, customer info, and items ordered.
For your customers
Customers receive an email when their order is confirmed. If you update the status to “Shipped” or “Delivered,” they'll be notified about that too.
Tip: Make sure your email settings are configured in Shop → Settings so notifications are sent from your shop's email address.