Which of the following is a role of the Mail Control Activity?

The role of maintaining inventory control of mail is critical within the Mail Control Activity. This function involves tracking and managing the flow of incoming and outgoing mail to ensure accuracy and efficiency in processing. By maintaining inventory control, the Mail Control Activity can oversee the distribution of mail items, verify that everything is accounted for, and monitor the status of shipments. This control helps to reduce the likelihood of loss or misplacement of mail, ensuring that all items are delivered to the intended recipients in a timely manner.

The other roles, while related to mail processing and management, do not capture the specific focus of inventory control. Processing military items, dispatching mail internationally, and receiving items from postal services are all essential functions within a mail system, but they do not emphasize the crucial aspect of controlling and tracking mail inventories, which is essential for effective mail management.