this is what it states when i'm setting up the paypal part:
What is PayPal Instant Payment Notification and how does it work?
Instant Payment Notification (IPN) integrates PayPal payment notification and authentication with GlobalLink.
When a customer makes a payment to you, PayPal will post a notification to GlobalLink. Included in this notification will be all of your customers' payment information (e.g. shipping address) as well as a piece of encrypted code. When GlobalLink receives the notification, it will then post the information, including the encrypted code, back to a secure PayPal URL. PayPal will authenticate the transaction and send confirmation of its validity back to GlobalLink.
You will then be able to view information in GlobalLink such as shipping address and other transaction information and easily print shipping labels.
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