What does "return receipt requested" provide to the sender?

"Return receipt requested" is a service that allows the sender to receive proof of delivery once the mail has reached its destination. When this option is selected, the postal service delivers a card, known as a return receipt, to the sender. This card is signed by the recipient upon receiving the item, serving as official confirmation that the delivery occurred and providing the sender with tangible proof.

This service is particularly useful in situations where it is important for the sender to have documentation that the intended recipient received the item, such as legal notices or important documents. The other options do not accurately reflect the benefits provided by the "return receipt requested" service. A reduced shipping rate pertains to cost and is not relevant to confirmation of delivery, while a tracking number is a separate service that provides status updates on the item but does not serve as signed proof of delivery. A refund option also does not relate to the condition of the item being confirmed as received.