title: DNN and PayPal, how to sent email to customer after payment has been made
body: <p>In my DNN website, using Paypal's Checkout button, when user has click the buy button and sent to Paypal. Make a payment and then redirect back to my site.</p>
  
  <p>Question: 
  How can I get that customer email address (from Paypal) so that i can sent a conformation email to him/her from my DNN website?</p>
  
  <p>thanks.</p>