Paypal IPN listener & processor

Avg Bid (USD)
Project Budget (USD)
$30 - $250

Project Description:
Please see the attached file.

I need a Paypal IPN script for instant delivery of download codes/keys by e-mail.

We will not use any buy now buttons. Payments will come from ebay auctions.
Script will read item title from IPN listener, and e-mail the code to buyer's paypal e-mail address.

For instance,
Let's say we're selling Windows keys.
If item title Windows 7 serial, script will e-mail a windows 7 serial.
If item title Windows xp serial, script will e-mail a windows xp serial.

After sending the key/code, script will mark it as sent and will not send duplicate to another buyer.
It would be nice if it could save date, sent code and sent e-mail address to sql for reporting purposes.

Item title and belonging keys/codes should be entered thru an admin menu. Adding more / removing unsold keys should be easily managed.

Skills required:
Paypal API, PHP
Additional Files: project.png
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