The USPS has created the "Certified, Return Receipt Electronic" sending option as an alternative to "Certified, Return Receipt" (the Green Card). Instead of having the recipient sign a Green Card (Form USPS 3811) as the receipt that is returned by mail to the sender, the USPS has the recipient sign for receipt of the mail item and scans the signature and address of delivery. The USPS uses those scanned items to create a Proof of Delivery PDF stating facts of the delivery. They make those PDFs available for us to download once per week on Monday evenings (but not on the same day as delivery). We email this statement by the USPS to you when it becomes available (unless you changed your settings about emailing Proof of Delivery) and make it available through the message page.