USPS

USPS Courier Service is a US government-owned company that delivers mail and parcels throughout the United States and to other countries. The company has hundreds of thousands of employees and over 31,000 branches across the country.

The average delivery time for parcels is 1 to 3 days within the United States and 7 to 21 days to other countries. 

An example of a track number might look like:  9400 1000 0000 0000 0000 00.

USPS was founded in 1775 and is one of the oldest courier companies in the world. Today the company provides a wide range of services to its customers, including the reception, transportation and delivery of letters, parcels, documents, goods, as well as banking and government documents.

There are many benefits to using JoyU to track USPS and other courier packages. On the site, you can easily track the movement of your parcel in real time and receive notifications about its movement. Also, the site allows you to reduce the time to search for information about the status of the delivery, which saves time and helps to avoid possible delays. 

All in all, using  JoyU is a convenient and easy way to track the status of your package anytime, anywhere.