Why It's Effective? Take advantage of the upcoming Informed Delivery® Promotion which offers a 2% discount on postage for business mailers who launch Informed Delivery® interactive campaigns with their physical mail pieces to reach and engage customers. There are more than 28 million registered users of Informed Delivery®, about 39% more than last year. Informed Delivery® allows mailers to drive customers to act on your mail piece through email and other digital channels. Thi