A method that enables the recipient to receive notification of the letters, flats and/or packages (mail) that the recipient is going to receive prior to the delivery of the mail. The recipient is then able to inform a post or courier, e.g., Federal Express®, Airborne®, United Parcel Service®, DHL®,...http://www.google.es/patents/US7085811?utm_source=gb-gplus-sharePatente US7085811 - Sender elected messaging services
