Which of the following services is known for providing overnight delivery?

The service that is recognized for providing overnight delivery is Priority Mail Express. This service is specifically designed to guarantee overnight delivery to most U.S. locations, allowing customers to send items with the assurance that they will arrive the next day. It comes with added benefits such as tracking, delivery updates, and a money-back guarantee if the package does not arrive on time.

While other services like Priority Mail and First-Class Mail offer expedited shipping options, they do not guarantee next-day delivery in the same way. Priority Mail generally provides delivery within one to three business days, depending on the destination. First-Class Mail is typically used for lighter packages and letters, and while it can be fast, it does not prioritize overnight service. Parcel Select primarily caters to large and bulky packages and is not designed for urgent letters or overnight delivery.

This distinction clearly sets Priority Mail Express apart as the service specifically committed to overnight delivery, making it the correct answer.