Stamps.com Company Information

Stamps.com (Nasdaq: STMP) is a leading provider of Internet-based postage services. Stamps.com’s online postage service enables small businesses, enterprises and online retailers to print U.S. Postal Service-approved postage with just a computer, printer and Internet connection, right from their home or office. The Company targets its services to small businesses and home offices, and currently has PC Postage partnerships with Avery, Microsoft, HP, the U.S. Postal Service and others.

Cited from http://www.stamps.com/company-info/

United Parcel Service, Inc. (UPS) is the world's largest package delivery company and a provider of supply chain management solutions. The global logistics company is headquartered in the city of Sandy Springs, Georgia, United States, which is a part of the Greater Atlanta metropolitan area. UPS delivers more than 15 million packages per day to more than 7.9 million customers in more than 220 countries and territories around the world.

UPS is known for its trademark brown delivery trucks and uniforms, hence the company nickname "Brown". UPS also operates its own airline and air cargo delivery service based in Louisville, Kentucky, United States.

Cited from https://en.wikipedia.org/wiki/United_Parcel_Service

https://www.ups.com/

The United States Postal Service (USPS), (also known as the Post Office, U.S. Mail, or Postal Service), is an independent agency of the United States government responsible for providing postal service in the United States. It is one of the few government agencies explicitly authorized by the United States Constitution.

Cited from https://en.wikipedia.org/wiki/United_States_Postal_Service

https://www.usps.com/