Stamps.com Q1 2004 Conference Call Invitation

This is an invitation to join the Stamps.com First Quarter 2004 Financial Results Conference Call. The call will take place Wednesday, April 21, 2004 from 2:00pm to 3:00pm ET. The dial-in number is (719) 457-2693 (no passcode necessary). Additionally, the call will be web cast via the Investor Relations website at http://investor.stamps.com.

If you have any questions, please call Stamps.com Investor Relations at (310) 581-7552 or e-mail us at [email protected].

We look forward to your participation!

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This message is not an offer to sell securities and is not soliciting an offer to buy securities.