What additional service can be applied to Priority Mail Express?

Priority Mail Express offers an array of services designed to enhance the shipping experience, and one of the key additional services that can be applied is Collect on Delivery (COD). COD allows the sender to collect payment for the value of the item being shipped at the time of delivery, providing an extra layer of security and assurance to the sender. This service is especially useful for businesses and individuals sending valuable items who want to ensure that they receive payment upon delivery.

The other options do not apply as additional services in the way COD does. Media Mail is specifically designed for shipping educational materials and cannot be used as an additional service with Priority Mail Express. Insurance can indeed be added to Priority Mail Express, but it typically covers amounts greater than $500, so the limitation does not reflect the full range of insurance options available. International Shipping is a separate category that requires different services and may not be classified as an additional service within the Priority Mail Express service structure.