This is an ancillary service for US Mail that is pretty much exactly what it says on the tin. It's kind of the cousin of certified mail for parcel post, media mail, or pretty much anything that is a package sent through the United States Postal Service sent via means other than first class mail, express mail, or priority mail - or rather, mail that is sent via ground routes.

A lot like certified mail, this is a service that provides for tracking of when an item is delivered; unlike certified mail, however, the return receipt is part of the deal.

This service costs $3.