KRAMER LEVIN NAFTALIS & FRANKEL LLP
                                919 THIRD AVENUE
                           NEW YORK, N.Y. 10022 - 3852

              FACSIMILE                               47, Avenue Hoche
           (212) 715-8000                               75008 Paris
                                                           France

            DIRECT NUMBER
           (212) 715-9100

                                                     December 21, 1999

Internet Commerce Corporation
805 Third Avenue
New York, New York  10022

                  Re:      Registration Statement on Form S-3

Ladies and Gentlemen:

                  We have acted as counsel to Internet Commerce  Corporation,  a
Delaware corporation (the "Registrant"),  in connection with the preparation and
filing of a Registration  Statement on Form S-3 (the  "Registration  Statement")
with the Securities and Exchange  Commission (the  "Commission") with respect to
the registration under the Securities Act of 1933, as amended (the "Act"), of an
aggregate of 949,289  shares (the  "Shares") of Class A Common Stock,  par value
$.01 per share,  including  shares which may be issued upon conversion of shares
of the Registrant's Series A Convertible Redeemable Preferred Stock (the "Series
A Preferred Stock") and upon exercise of warrants.

                  In connection  with the  registration  of the Shares,  we have
reviewed  copies  of  the  Registration  Statement,  the  Amended  and  Restated
Certificate of Incorporation of the Registrant,  as amended (the "Certificate of
Incorporation"),  the  By-laws of the  Registrant,  resolutions  of the Board of
Directors  of the  Registrant  and such other  documents  and records as we have
deemed  necessary  to enable us to express an  opinion  on the  matters  covered
hereby.  In rendering this opinion,  we have (a) assumed (i) the  genuineness of
all  signatures on all documents  examined by us, (ii) the  authenticity  of all
documents  submitted to us as  originals  and (iii) the  conformity  to original
documents of all documents  submitted to us as photostatic  or conformed  copies
and the  authenticity  of the  originals of such  copies;  and (b) relied on (i)
representations,  statements and certificates of public officials and others and
(ii) as to matters of fact,  statements,  representations  and  certificates  of
officers and representatives of the Registrant.

                  Based  upon  the  foregoing,  we are of the  opinion  that the
Shares  covered  by the  Registration  Statement  are or,  in the case of Shares
issuable upon  conversion or exercise of Series A Preferred  Stock and warrants,
will be,  when  issued in  accordance  with the terms of such Series A Preferred
Stock  or  warrants,  as the  case  may  be,  validly  issued,  fully  paid  and
non-assessable.



Internet Commerce Corporation
December 21, 1999
Page 2

                  We hereby  consent to the use of this opinion as an exhibit to
the Registration  Statement.  In giving the foregoing consent, we do not thereby
admit that we are in the  category of persons  whose  consent is required  under
Section 7 of the Act or the rules and regulations of the Commission thereunder.

                  We do not express any  opinion  with  respect to any law other
than the  laws of the  State of New  York  and the  federal  laws of the  United
States.  Our  opinion  is  rendered  only  with  respect  to the laws  which are
currently in effect in such jurisdictions.



                                                     Very truly yours,


                                            /s/ Kramer Levin Naftalis & Frankel
                                            -----------------------------------
                                                Kramer Levin Naftalis & Frankel