With over 300,000 monthly subscribers, Stamps.com® is the leading provider of Internet-based postage solutions. Stamps.com was the first company to be approved by the U.S. Postal Service® to offer a software-only postage service that lets customers buy and print postage online. The company targets small businesses, small and home offices and individuals through partnerships with companies including Office Depot, Microsoft, NCR, CompUSA, Earthlink, HP, Dymo, Vendio and the U.S. Postal Service. Stamps.com is a publicly traded company on the NASDAQ under the symbol STMP.

I am the founder of E-Stamp Corporation (www.estamp.com), a company that I started in 1993 using your product for my business plan. The company is on its way and I am in the process of starting a new venture: Kara Technologies. I thank you and compliment you on your extraordinary support, which is second to none. This is an "unsolicited message" and you are welcome to quote me.
- Salim Kara

E-Stamp was started by entrepreneur Salim Kara. His secretary was in a car accident on the way to the post office to refill postage and sued him for damages. The story goes that Kara felt there must be a better way to purchase and use postage, and so he developed the digital postage concept.

E-Stamp Corp. sold its patents and other intellectual property rights as well as the E-Stamp name and E-Stamp.com domain to rival Stamps.com in April of 2001.