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[ DOWNLOAD SIMPLE IPN ]

I was running a class for my Netpreneurs Online Classroom and we got to the part where we are suppose to learn how to deliver our downloadble digital products.

I don’t want to make this complicated for my students. I want to make this simple, but at the same time offers some form security from online thefts. So I started thinking of a simple script that should be able to do the following:

• Expiring download link
• Expiring download page
• Minimum setup
• No database required
• Uses Paypal IPN
• Emails the customers with their download info
• Customizable download page, thank you page and email
• Multiple files product package
• Allows Paypal Sandbox testing
• No need to create the Paypal Button form - will generate for you
• Don’t have to understand Paypal IPN - just know that it’s more secure
• Strict verification process - verifying price, Paypal email address and currency

HOW TO USE / INSTALLATION
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HOW IT WORKS

If you sell ebooks or software, you need a way to protect your download page from prying eyes. Many of us use Paypal. It’s easy and it’s convenient. I use them too. And the easiest way to use start using Paypal to accept payment is to create a Buy Now Button from within your Paypal account.

But to protect your digital product, you need to do something extra.

The sad truth is, Paypal’s Buy Now Button doesn’t actually protect your downloadable products. By viewing the HTML source code of your website, people can see where they will be redirected after making a payment using Paypal. And knowing this information, people can just type that address in the browser, skipping the part where they make the payment.

But Paypal has implemented (since years ago) a mechanism that you can use to verify and approve orders before allowing access to your download page. And all that can be automated, so you don’t have to do it manually.

This is known as the Paypal IPN (Instant Payment Notification). You can get a manual at Paypal at Paypal’s IPN page.

Before I tell you about how to implement this with your product, let me first tell you how it works.

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