We
consent to the incorporation by reference in this Registration Statement (Form
S-8) pertaining to the Stamps.com Inc. 2010 Equity Incentive Plan of our reports
dated March 15, 2010, with respect to the consolidated financial statements of
Stamps.com Inc. and subsidiary and the effectiveness of internal control over
financial reporting of Stamps.com Inc. and subsidiary, included in its Annual
Report (Form 10-K) for the year ended December 31, 2009, filed with the
Securities and Exchange Commission.