USPS Window Academy Practice Exam

The main idea here is proof of delivery: what you actually get to show that the package reached its destination. Delivery Confirmation notes that the item was delivered (or a delivery attempt occurred) and records the date, time, and address, but it does not require anyone at the recipient’s end to sign for it. Signature Confirmation goes a step further by requiring the recipient’s signature and recording who signed, which provides a stronger proof of exactly who received the item.

Insurance is not something that defines the difference between these two services; it’s a separate option you can add to many mailings. So the essential distinction is whether a signature is obtained or just the delivery event is confirmed.