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Porter Erisman Alexander Ogilvy Public Relations Worldwide 86-10-6443-6488 x 356 porter.erisman@ogilvy.com Stamps.com Company Contact: laptop battery

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Stamps.com: August 23, 1999 - Microsoft Partners With Stamps.com to Bring Internet Postage to Microsoft Office Users Welcome to Stamps.com! Learn More Sign up for Stamps.com Check out the all new PhotoStamps Welcome to Stamps.com Microsoft Partners With Stamps.com to Bring Internet Postage to Microsoft Office Users Santa Monica, Calif., August 23, 1999 - Stamps.com (Nasdaq: STMP) today announced a partnership with Microsoft (Nasdaq: MSFT) that will offer the Stamps.com Internet Postage service through the popular Microsoft Office Update Web site, (http://officeupdate.microsoft.com). The leader in the delivery of postage over the Internet, Stamps.com also announced today that its service will be available nationwide on September 27, 1999, launching in conjunction with national promotions to be held with key corporate partners. As part of the Microsoft agreement, Stamps.com will make available to millions of Microsoft Office users its easy, convenient, secure and cost-effective Internet Postage service. Stamps.com allows customers to buy and apply postage using their PC and just an ordinary printer -requiring no hardware, no set-up fees, and no special connections. Customers can use Stamps.com in three simple steps: download the free software, register and print. "This partnership is a major step forward in our company's continued growth as the leader in the delivery of postage over the Internet, " said John Payne, president and CEO of Stamps.com. "Together with Microsoft, we will offer millions of Office users the fastest, simplest and most secure service for buying and printing postage from their printers." Stamps.com also integrates seamlessly with existing address books, word processors and other applications, including Microsoft Word and Outlook, so that customers can verify mailing addresses instantly and print postage directly from the software applications they currently use. "Microsoft is excited to have Stamps.com provide our small office and home office customers online access to postage from within their Office applications, " said Taylor Collyer, Business Development Manager, Microsoft Corp. "With Office 2000, Microsoft has shown how the Internet can bring seamless integration of value-added services to the world's premier productivity suite. The Stamps.com Internet Postage service is a great example of how Office 2000, a PC and the Internet combine to make people more productive, " added Collyer. Stamps.com provides a convenient and cost-effective method for handling necessary administrative tasks. "With Internet Postage, sending mail finally seems to fit with the rest of the way I do business, and it integrates with the Microsoft products I use on a daily basis, " said Wellington Wilson, a Stamps.com customer. Customers will be able to download the Stamps.com free software directly from the Microsoft Office Update download catalog and begin printing postage from their desktops within moments from signing up for the service. The Microsoft Office Update site is visited by millions of Office customers each month. With built-in links from Office products, it provides customers with free updates, add-on products and services that can add more value to their Office applications. With Office 2000, customers will have direct access from their desktop applications to the Microsoft Office Web site where they will be able to easily sign up for Stamps.com. Stamps.com Availability Stamps.com recently received U.S. Postal Service regulatory approval and is currently converting its beta customers to commercial service. Stamps.com service will be available to customers nationwide on September 27, 1999. Customers interested in using the service can go to the Stamps.com Web site, http://www.stamps.com, to sign up. About Stamps.com Press Contact Beth Johnson Fitzgerald Communications 650.264.1457 bjohnson@fitzgerald.com Stamps.com Company Investor Contact:

Ken McBride, Sr. Director Finance (310) 581-7552 ir@stamps.com Customer Support: laptop computers

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StampMaster Internet Postage also offers the option to print postage directly from entries in contact management programs that use the Windows address book format such as Microsoft Outlook. Users will simply select contacts in their existing address book and with a single click print postage and addresses onto envelopes or labels. StampMaster's recent field testing conducted with Beta customers revealed that integration of Internet Postage with popular applications to streamline preparation of mail was the most requested feature by a factor of 5:1. travelstar

"Adding Internet Postage to Microsoft Word and the Windows address book are excellent examples of the way StampMaster can seamlessly integrate with every popular software application that results in the printing of an address, " said John M. Payne, StampMaster's President and CEO. "And because our unique server-based architecture requires no hardware on the user's PC, StampMaster Internet Postage can be bundled with hundreds of popular applications at no extra cost to partners or users." gateway

StampMaster uses Microsoft BackOffice technologies throughout its secure end-to-end system. StampMaster's servers, running on Windows NT 4.0 Server, provide the highest levels of government-certified cryptography (FIPS 140-1 Level 4) to create the secure e-commerce channel. Microsoft SQL Server delivers high-speed and reliable data access and storage. On the client, StampMaster uses ActiveX technology to integrate into Microsoft Office, Microsoft Outlook, the Windows Address Book and many other applications. StampMaster is Beta testing its Internet Postage product in the Washington, D.C. area as part of the USPS' Information Based Indicia Program (IBIP). Recruitment of testers for the expansion of Beta to the San Francisco and Tampa Bay areas has already begun. All product add-ins and software integration must be authorized by the USPS to ensure security and operational integrity prior to inclusion in the Beta test and commercial release. Media and consumers interested in participating in StampMaster's Beta test should visit the company's Web site at http://www.stampmaster.com. For more information on the IBI Program, please the visit the USPS Web site at http://www.usps.gov/ibip. About StampMaster

StampMaster is a leading Internet e-commerce provider that delivers highly secure transaction-oriented Internet services for consumer, small business and corporate users. The company was founded in 1996 with the mission of using the power of the digital age to streamline the way consumers and businesses purchase and apply postage. StampMaster is located at 3420 Ocean Park Blvd., Suite 1040, Santa Monica, CA, 90405, and http://www.stampmaster.com. The company is privately held and funded through venture capital investments from Brentwood Venture Capital, Enterprise Partners, and Forrest, Binkley and Brown. laptop parts

### StampMaster is a trademark of StampMaster, Inc. Stamps.com: December 7, 1998 - StampMaster, Inc., Today Announced that the Company Has Changed Its Name to Stamps.com Welcome to Stamps.com! Learn More Sign up for Stamps.com Check out the all new PhotoStamps Welcome to Stamps.com StampMaster, Inc., Today Announced that the Company Has Changed Its Name to Stamps.com Stamps.com is a Strong, Clear, and Recognizable Brand that Perfectly Describes the Company\'s Internet Postage Service SANTA MONICA, Calif., December 7, 1998 StampMaster, Inc., today announced that the company has changed its name to Stamps.com. Stamps.com is a strong, clear and recognizable brand that perfectly describes the company's Internet Postage service. The Stamps.com service enables users to print postage directly onto envelopes, labels or business documents using ordinary laser or inkjet printers. By removing the specialized hardware required by traditional postage meters and all other competing online postage solutions, Stamps.com has made purchasing and applying postage more convenient and cost-effective than ever before. "The Stamps.com name has all the qualities of a leading Internet brand, " said John M. Payne, Stamps.com's President and CEO. "This easily remembered brand, combined with our substantial time to market advantage, strengthens our position as we build the premier brand for Internet Postage." Customers download free Internet Postage software from Stamps.com and partner sites, register, purchase postage electronically and will immediately begin using the system. With Stamps.com, professional-looking postage is printed on First Class, Priority and Express Mail 24 hours a day, 7 days a week without having to leave the office or home. The Stamps.com service also corrects addresses using an official USPS database, inserts the ZIP+4 Code and provides automatic postal rate calculation to eliminate wasted postage. By contrast, all other vendors approved by the USPS for market testing must deliver a hardware device to be installed on the user's PC before postage printing can begin.

The Stamps.com Internet Postage service easily integrates with Microsoft Word, Microsoft Outlook , Peachtree Office Accounting and other leading applications, enabling Stamps.com customers to print postage while addressing envelopes, labels, and other documents in one simple process. As an example, using Stamps.com, Peachtree customers will print postage for checks, invoices, statements and other business forms automatically. software

Stamps.com is Beta testing its Internet Postage product in the Washington, DC area as part of the USPS Information Based Indicia Program (IBIP). Recruitment of testers for the expansion of Beta to the San Francisco and Tampa Bay areas has already begun. All product add-ins and software integration must be authorized by the USPS to ensure security and operational integrity prior to inclusion in the Beta test and commercial release. Media and consumers interested in participating in Stamps.com's Beta test should visit the company's Web site http://www.stamps.com. For more information on the IBI Program, please the visit the USPS Web site at http://www.usps.gov/ibip. hard drives

About Stamps.com

Stamps.com, formerly StampMaster, Inc., is a leading provider of highly secure transaction-oriented Internet services for consumer, small business and corporate users. The company was founded in 1996 with the mission of using the power of the digital age to streamline the way consumers and businesses purchase and apply postage. Stamps.com is located at 3420 Ocean Park Blvd., Suite 1040, Santa Monica, CA, 90405, and at http://www.stamps.com. The company is privately held and funded through venture capital investments from Brentwood Venture Capital, Enterprise Partners, and Forrest, Binkley and Brown. electronics