Next, if you have a Premier or Business account, you'll need to make a small configuration change to your PayPal settings.
- Log into PayPal
- Click on your "Profile" tab
- Click on "Instant Payment Notification Preferences"
- Check the "Instant Payment Notification" checkbox and enter in the URL of your ipn.php file (located in the zipfile) into the Notification URL field. Don't worry: you can override this URL for any form, so you can use the same PayPal email to accept payments on multiple sites.