title: Is it possible to implement email read-receipts using OpenERP?
body: <p>Does anyone know if it's possible to implement email read-receipts in Open ERP?</p>
  
  <p>I'd like to use OpenERP to send invoices to customers, and we'd like to be able to track if the customer has received the email. </p>
  
  <p>TIA</p>