This is simply not an idea that is new needless to say. The United States Postal Service has offered read receipts in one form or another for more than a century. A receipt of delivery if they requested one in 1855, they introduced Registered Mail, which essentially would give a sender. Precisely a century later on, the https://adam4adam.reviews/amateurmatch-review/ USPS rolled away Certified Mail, which, because the title implies, certified distribution by providing senders a literal receipt. By 2014, the USPS perhaps took read receipts a step further by permitting individuals to see scans of mail which was going to be sent to these with a solution called Informed Delivery.