How do I make sure I get a copy of what was ordered, or will PayPal give me details?

I set up an order form to sell  our items, and  folks are directed  to pay through PayPal.

How do I make sure I get a copy of what was ordered, or will PayPal give me details?

You will receive submissions from your form with the details of the selected products like the product name, quantity, and total. You will also get a notification from Paypal when there's a successful payment.