Which form is used for Registered Mail service?

• A. PS Form (3816) 3816
• B. Label 200
• C. PS Form (3806) 3806
• D. PS Form (3817) 3817

Answer: (C)

Registered Mail relies on a dedicated form to capture mailing details and maintain a secure custody record as the item moves through the system. PS Form 3806 is the form USPS uses for Registered Mail, providing the space to note sender and recipient information, value if insured, and a unique tracking/registry number that accompanies the item. This documentation is what helps prove mailing, support the chain of custody, and assist with later delivery verification and insurance handling. The other options are forms or labels associated with different USPS services, so they don’t match the documentation required for Registered Mail.