Exhibit 99.1


                        CERTIFICATION OF PERIODIC REPORT
                        --------------------------------

I, Paul V. Reilly, chairman, president and chief executive officer of Mail-Well,
Inc. (the "Company"), certify pursuant to Section 906 of the Sarbanes-Oxley Act
of 2002, 18 U.S.C. Section 1350, that:

(1)      the Quarterly Report on Form 10-Q of the Company for the quarterly
         period ended March 31, 2003 (the "Report") fully complies with the
         requirements of Section 13(a) or 15(d) of the Securities Exchange Act
         of 1934 (15 U.S.C. 78m or 78o(d)); and

(2)      the information contained in the Report fairly presents, in all
         material respects, the financial condition and results of operations
         of the Company.

Dated:  May 5, 2003

                                              /s/ Paul V. Reilly
                                              --------------------------------
                                              Paul V. Reilly
                                              Chairman, President and CEO