en.wikipedia.org/wiki/United_States_Postal_Service

The United States Postal Service is an independent agency of the executive branch of the United States federal government responsible for providing postal ...

www.usps.com

Welcome to USPS.com. Find information on our most convenient and affordable shipping and mailing services. Use our quick tools to find locations, calculate ...

m.usps.com

Add a tracking number. Clear text field. Track · Informed Delivery · Buy Stamps · Prices · Click-N-Ship · Locations · ZIP Codes · Schedule Pickup · Hold Mail ...

www.usps.com/help/welcome.htm

Find answers to your questions about USPS products or services, get ...

www.usps.com/manage/welcome.htm

With USPS you can manage mail delivery for your home, business, or PO Box ...

www.usps.com/ship

Ship and mail with USPS online shipping options. Choose your mail service by ...

www.usps.com/shipping/trackandconfirm.htm

The easiest tracking number is the one you don't have to know. With Informed ...

www.usa.gov/federal-agencies/u-s-postal-service

The Postal Service provides mail processing and delivery services to individuals and businesses in the U.S..

www.stamps.com/usps/postage-help-center

Get current USPS postage rates, track packages, and learn about USPS mail classes and special services.