Short Answer 
The Waiver of Signature and Indemnity is essential for handling sensitive materials, prohibiting U.S. Express mail to maintain traceability. It is recommended to avoid external collection boxes for sending classified information and to consider using USPS registered mail to enhance security and tracking during transit.
Step 1: Understand the Waiver of Signature and Indemnity
The Waiver of Signature and Indemnity block is a crucial part of mailing protocols when handling sensitive information, particularly Secret materials. Selecting this option for U.S. Express mail is strictly prohibited as it compromises the traceability of the package. Ensuring proper documentation helps verify that the mail was handled securely and received by the intended recipient.
Step 2: Avoid External Collection Boxes
When sending Secret information, it is important to avoid using external street-side collection boxes. These boxes do not provide the necessary security and tracking required for sensitive materials. Instead, use secure mailing methods that allow for better handling and receipt confirmation, ensuring the protection of classified information during transit.
Step 3: Use USPS Registered Mail When Necessary
USPS registered mail is a secure mailing option that can complement the sending of Secret information under certain conditions. While not always required, using a registered mail receipt enhances the security of the package. It is advisable to adhere to strict mailing protocols to ensure that all materials are transmitted securely and are traceable throughout the mailing process.