Fellow PayPal User,

If you use PayPal as your primary payment processing platform then you know very well that while it is a good system, there are some severe limitations when trying to sell multiple products from multiple websites.

Namely, the Instant Payment Notification, or IPN.

The PayPal IPN is an important tool for integrating with 3rd party systems, such as membership sites, ticketing systems, and various fulfillment systems.

The problem with the PayPal IPN is that you can only have one IPN forwarding URL.

With the plethora of systems that every professional online entrepreneur must use to make money online, chances are that you will need the ability to forward the IPN data to various systems at the same time – the time of sale.