https://www.usps.com/manage/informed-delivery.htm
Informed Delivery is a free service from USPS that shows you preview images of incoming mail, plus status updates about your incoming and outbound packages....
informed deliverymailpackagenotificationsusps
https://www.asx.com.au/investors/start-investing/electronic-delivery-of-chess-notifications
ASX has launched the ASX CHESS Statements Portal, giving you the ability to receive electronic notifications about your holdings.
electronic deliverychessnotifications