What is the Postal Explorer considered to be?

The Postal Explorer is considered a virtual library for customers because it offers a wealth of information about postal products, services, and pricing available through an accessible online platform. This resource is designed to help customers easily find detailed information regarding mailing options, shipping services, and various postal regulations. By providing this information online, customers can conveniently access it from anywhere without needing to visit a physical location. The other options, while they may represent useful resources or services, do not accurately describe the primary function of the Postal Explorer, which focuses on serving as an information hub for postal-related inquiries.