Which extra service allows the sender to receive a receipt upon delivery?

The Return Receipt for Merchandise service is specifically designed to provide the sender with proof that the item was received by the recipient. When this service is used, the sender receives a receipt that confirms delivery, including the recipient's signature, which serves as evidence that the item was indeed delivered. This offers both the sender peace of mind and a record of the transaction, which can be particularly valuable for items of significant value or importance.

In contrast, Registered Mail also provides secure delivery and a receipt, but its primary focus is on security and tracking rather than confirming receipt through a signature. Signature Confirmation requires the recipient's signature to confirm delivery, but this service is generally used to ensure that the recipient acknowledges receipt rather than providing a receipt to the sender. Lastly, Certificate of Mailing serves as proof that an item was mailed, but it does not confirm receipt by the recipient, nor does it provide any delivery verification.