EXHIBIT 5
             OPINION AND CONSENT OF BROBECK, PHLEGER & HARRISON LLP


                               February 21, 2001


Juno Online Services, Inc.
1540 Broadway
New York, NY  10036

              Re: Juno Online Services, Inc. - Registration Statement for
                  Offering of an Aggregate of 1,500,000 Shares of Common Stock

Dear Ladies and Gentlemen:

                  We have acted as counsel to Juno Online Services, Inc., a
Delaware corporation (the "Company"), in connection with the registration on
Form S-8 (the "Registration Statement") under the Securities Act of 1933, as
amended, of 1,500,000 shares of common stock and related stock options for
issuance (the "Shares") under the Company's 2001 Supplemental Stock Incentive
Plan (the "Plan").

                  This opinion is being furnished in accordance with the
requirements of Item 8 of Form S-8 and Item 601(b)(5)(i) of Regulation S-K.

                  We have reviewed the Company's charter documents and the
corporate proceedings taken by the Company in connection with the establishment
of the Plan. Based on such review, we are of the opinion that, if, as and when
the Shares have been issued and sold (and the consideration therefor received)
pursuant to the provisions of option agreements duly authorized under the Plan
and in accordance with the Registration Statement, such Shares will be duly
authorized, legally issued, fully paid and nonassessable.

                  We consent to the filing of this opinion letter as Exhibit 5
to the Registration Statement.

                  This opinion letter is rendered as of the date first written
above and we disclaim any obligation to advise you of facts, circumstances,
events or developments which hereafter may be brought to our attention and which
may alter, affect or modify the opinion expressed herein. Our opinion is
expressly limited to the matters set forth above and we render no opinion,
whether by implication or otherwise, as to any other matters relating to the
Company, the Plan or the Shares.



                                                 Very truly yours,


                                                 BROBECK, PHLEGER & HARRISON LLP