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MASSACHUSETTS FINANCIAL SERVICES COMPANY
500 BOYLSTON STREET, BOSTON, MASSACHUSETTS 02116-3741
617-954-5000
January 2, 2001
VIA EDGAR
Securities and Exchange Commission
Judiciary Plaza
450 Fifth Street, NW
Washington, DC 20549
Re: MFS Series Trust I (the "Trust") (File Nos. 33-7638 and 811-4777)
on Behalf of: MFS(R)Managed Sectors Fund ("MMS") MFS(R) Cash
Reserve Fund ("MCF") MFS(R) Global Asset Allocation Fund ("MAA")
MFS(R) Strategic Growth Fund ("AGF") MFS(R) Research Growth and
Income Fund ("RGI") MFS(R) Core Growth Fund ("CGF") MFS(R) Value
Fund ("EIF") MFS(R) New Discovery Fund ("NDF") MFS(R) Research
International Fund ("RIF") MFS(R) Technology Fund ("SCT") MFS(R)
Global Telecommunications Fund ("GTF") MFS(R) Japan Equity Fund
("MJE")
Ladies and Gentlemen:
Pursuant to Rule 497(j) under the Securities Act of 1933, as amended,
please accept this letter on behalf of the Trust as certification that the
Prospectuses and Statements of Additional Information for the Trust do not
differ from those contained in Post-Effective Amendment No. 38 for MMS, MCF,
MAA, AGF, RGI, CGF, EIF, NDF, RIF, SCT, GTF and MJE (the "Amendment") to the
Trust's Registration Statement on Form N-1A. The Amendment was filed
electronically on December 29, 2000 for MMS, MCF, MAA, AGF, RGI, CGF, EIF, NDF,
RIF, SCT, GTF and MJE.
Please call the undersigned or Claudia Murphy at (617) 954-5000 or
(800) 343-2829 with any questions you may have.
Very truly yours,
MICHAEL WHITAKER
Michael Whitaker
Counsel
