The function of mail classification rates belongs to personnel within which organization?

The function of mail classification rates is specifically handled by personnel within the Military Post Office (MPO). The MPO is responsible for managing the mail for military members and their families, including the classification and processing of mail according to specific regulations and rates established for military correspondence.

Mail classification involves determining the correct postage and handling requirements based on the type of mail being sent, such as letters, packages, or special services. This classification ensures that mail is handled appropriately within the military postal system, reflecting the unique needs and requirements of military operations.

While other organizations listed, such as mail processing centers, may assist in mail handling and processing, they do not specifically manage the classification rates for military mail as the MPO does. Postal regulations established by the Department of Transportation also do not directly oversee military mail classification. Lastly, Federal Express operates as a commercial courier service and does not govern mail classifications related to military operations.