Your Stamps.com $80 Offer

FREE 5lb Digital Scale

As a new Stamps.com customer you will receive a FREE 5 lb. Digital Scale. The scale is a $50 value and is yours to keep with no additional obligation. Just pay for shipping and handling (typically $9.99 or less).

$25 Postage Offer

As a new Stamps.com customer you will receive $5 in free postage that you can use during your trial period. After you complete your trial period, you are eligible for an additional $20 in postage. We will give you two $10 postage coupons. You can redeem one coupon per month once you complete your trial.

FREE Supplies Kit

To help you get started we will ship you a free Supplies Kit that includes free postage labels to use with the service (a $5 value). However, you don't need to wait for the Supplies Kit to arrive in order to print postage. You can immediately take advantage of features such as printing shipping labels on plain paper or printing postage directly on envelopes!

Stamps.com to Present at ThinkEquity Partners’ San Francisco Growth Conference

LOS ANGELES, September 16, 2004 – Stamps.com® (Nasdaq: STMP) will be presenting at ThinkEquity Partners’ Growth Conference at the Omni Hotel in San Francisco on Thursday September 23, 2004. The Company will be presenting at 11:30 a.m. PT and will be available for one–on–one investor meetings following the presentation.

About PhotoStamps

PhotoStamps is a PC Postage product brought to you by Stamps.com Inc., the leading provider of Internet–based postage services. In addition to providing the PhotoStamps product, Stamps.com PC Postage Service enables over 300,000 customers to print U.S. Postal Service–approved postage with just a PC, printer and Internet connection. The Company targets its PC Postage services to small businesses and home offices, and currently has partnerships with companies including Microsoft, CompUSA, EarthLink, HP, NCR, Office Depot, and Vendio.

“Safe Harbor” Statement under the Private Securities Litigation Reform Act of 1995: This release may contain forward–looking statements that involve risks and uncertainties. Important factors, including the Company’s ability to complete its products and obtain regulatory approval, which could cause actual results to differ materially from those in the forward–looking statements, are detailed in filings with the Securities and Exchange Commission made from time to time by Stamps.com, including its Annual Report on Form 10–K for the fiscal year ended December 31, 2003, Quarterly Reports on Form 10–Q, and Current Reports on Form 8–K. Stamps.com undertakes no obligation to release publicly any revisions to any forward–looking statements to reflect events or circumstances after the date hereof or to reflect the occurrence of unanticipated events.

Stamps.com, the Stamps.com logo and PhotoStamps are trademarks or registered trademarks of Stamps.com Inc. All other brands and names are property of their respective owners.