Which service provided by USPS ensures the highest level of security for mail?

Registered Mail is recognized for providing the highest level of security for mail sent through the United States Postal Service (USPS). This service is specifically designed for sending valuable or sensitive items, offering features that enhance security during transit.

One of the key aspects of Registered Mail is that it is tracked at every point in the mail stream. Each Registered Mail item is assigned a unique tracking number, allowing both the sender and receiver to monitor its progress through the system. Additionally, Registered Mail is handled separately from regular mail, often requiring additional security measures such as being kept in locked containers during transport.

Furthermore, it provides a higher level of insurance coverage compared to other services, ensuring that items of significant value can be compensated for if lost or damaged. This combination of tracking, security handling, and insurance makes Registered Mail the most secure mailing option offered by USPS.

In contrast, other options like Priority Mail or Express Mail provide speed and reliability but do not offer the same level of security and tracking that Registered Mail does. Standard Mail, on the other hand, is primarily intended for mass mailings and does not include tracking, making it the least secure option.