A customer wants to send important documents and asks how to get proof that the recipient received them. What service feature should you explain?

EXTRA SERVICES KNOWLEDGE: For important documents needing PROOF OF RECEIPT, explain options like CERTIFIED MAIL with RETURN RECEIPT (provides a mailing receipt and a record/signature of delivery) or signature confirmation. Saying tracking alone is enough (tracking shows delivery status but not necessarily a signed receipt), claiming USPS can't provide proof, or suggesting a plain stamp all fail to meet the customer's need. The 477 VEA tests knowledge of USPS extra services and matching them to customer needs. Knowing the services that provide proof of mailing and delivery (Certified Mail, Return Receipt, signature confirmation) — and recommending them appropriately — is important product knowledge for counter service.