What is one limitation of using Media Mail?

The correct answer highlights a specific limitation of Media Mail, which is that packages sent through this service are subject to inspection. This means that postal employees can open and check the contents of Media Mail packages to ensure compliance with the regulations governing what can be sent via this mail class.

This inspection process is put in place to maintain the integrity of the service, ensuring that only allowed items, such as books, CDs, and educational materials, are sent via Media Mail. Items that do not comply with the restrictions are subject to penalties or may not be accepted for mailing at all.

Understanding the inspection policy associated with Media Mail helps users recognize that while this mailing option is cost-effective for shipping eligible items, it also comes with the requirement of allowing postal staff to verify the contents, setting it apart from other mailing classes where privacy might be more stringent.