<ARTICLE> 5 <LEGEND> THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE CONDENSED CONSOLIDATED FINANCIAL STATEMENTS OF JUNO ONLINE SERVICES, INC. AND SUBSIDIARY FOUND IN THE COMPANY'S FORM 10-Q AS OF AND FOR THE THREE MONTHS ENDED MARCH 31, 2000. </LEGEND> <MULTIPLIER> 1,000 <PERIOD-TYPE> 3-MOS <FISCAL-YEAR-END> DEC-31-2000 <PERIOD-START> JAN-01-2000 <PERIOD-END> MAR-31-2000 <CASH> 128,818 <SECURITIES> 0 <RECEIVABLES> 10,612 <ALLOWANCES> 703 <INVENTORY> 0 <CURRENT-ASSETS> 152,015 <PP&E> 10,619 <DEPRECIATION> 3,797 <TOTAL-ASSETS> 159,266 <CURRENT-LIABILITIES> 51,468 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 386 <OTHER-SE> 205,706 <TOTAL-LIABILITY-AND-EQUITY> 159,266 <SALES> 24,047 <TOTAL-REVENUES> 24,047 <CGS> 14,646 <TOTAL-COSTS> 14,646 <OTHER-EXPENSES> 58,749 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 44 <INCOME-PRETAX> (47,626) <INCOME-TAX> 0 <INCOME-CONTINUING> (47,626) <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> (47,626) <EPS-BASIC> (1.28) <EPS-DILUTED> (1.28)