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MFS(R) Capital Opportunities Fund               MFS(R) Mid Cap Growth Fund
MFS(R) Research Fund                            MFS(R) Money Market Fund



                                                              December 14, 2001

The deadline to vote is Thursday,  December 27, 2001.  The funds have  committed
many hours and resources to this, but these efforts will  essentially be in vain
if we do not get your vote.

                     YOUR VOTE IS CRITICAL. PLEASE VOTE NOW.

The reason for these  proactive  measures  is to ensure  that the funds meet the
two-thirds vote  requirement  necessary for the adoption of an amended  restated
Declaration of Trust. We cannot  emphasize enough how important it is to vote on
this matter.  This  Declaration will give us the flexibility to provid e you and
all other  shareholders with the  state-of-the-art  investment  vehicle you have
come to expect  from MFS.  We would be happy to answer any  questions  regarding
this proposal. You may reach us at 1-888-832-5695,  Monday through Friday from 9
a.m. to 11 p.m. and Saturday from 12 a.m. to 6 p.m. EST.

Please assist MFS by voting now. You can choose  whichever  option below is most
convenient for you:

1.        By phone (with a representative):
          Call toll free 1-888-832-5695. Representatives are available to answer
          questions and take your vote Monday  through  Friday from 9 a.m. to 11
          p.m. and Saturday from noon to 6 p.m. Eastern time.

2.        By Internet
          Go to www.proxyweb.com  anytime,  and enter the control number on your
          proxy card.

3.        By fax
          Fax your completed proxy card toll free to 1-800-733-1885 anytime.

4.        By touch-tone phone
          Call toll free 1-888-221-0697 anytime, and follow the instructions. Be
          sure to have your proxy card available when you call.

5.        By mail
          Complete your proxy card,  and return it in the enclosed  postage-paid
          envelope.  Due to recent events with the delay of mail, please utilize
          any of above options to register your vote in time for the meeting.

We appreciate your help and patience regarding this matter.





                                  SCHEDULE 14A
PROXY STATEMENT PURSUANT TO SECTION 14(A) OF THE SECURITIES EXCHANGE ACT OF 1934

Filed by the Registrant [ X ]
Filed by a party other than the Registrant
Check the appropriate box:  [   ] Preliminary Proxy Statement
                            [   ] Confidential for Use of the Commission
                                   Only (as permitted by Rule 14a-6(e)(2))
                            [   ] Definitive Proxy Statement
                            [ X ] Definitive Additional Materials
                            [   ] Soliciting Material Pursuant to Rule 14a-11(c)
                                   or Rule 14a-12

MFS(R)Series  Trust IV (File Nos.  2-54607 and  811-2594) on behalf of MFS(R)Mid
Cap Growth Fund and  MFS(R)Money  Market Fund;  MFS(R)Series  Trust V (File Nos.
2-38613 and 811-2031) on behalf of MFS(R)Research  Fund; and MFS(R)Series  Trust
VII (File Nos.  2-68918 and 811-3090) on behalf of  MFS(R)Capital  Opportunities
Fund;
- --------------------------------------------------------------------------------
(Name of Registrant as Specified in its Charter)

- --------------------------------------------------------------------------------
       (Name of Person(s) Filing Proxy Statement)

Payment of Filing Fee (Check the appropriate box):
       [ X ] No fee required

       [   ] Fee computed on table below per Exchange Act Rules 14a-6(i)(1)
             and 0-11.

       (1)   Title of each class of securities to which transaction applies:
- --------------------------------------------------------------------------------
       (2)   Aggregate number of securities to which transaction applies:
- --------------------------------------------------------------------------------
       (3)   Per unit price or other underlying value of transaction computed
             pursuant to Exchange Act Rule 0-11 (Set forth the amount on which
             the filing fee is  calculated  and state how it was  determined):
- --------------------------------------------------------------------------------
       (4)   Proposed   maximum    aggregate   value   of   transaction:
- --------------------------------------------------------------------------------
       (5)   Total Fee Paid:
- --------------------------------------------------------------------------------
       [  ]  Fee  paid  previously  with  preliminary  materials.
- --------------------------------------------------------------------------------
       [  ]  Check  box if any  part  of the  fee is  offset  as
             provided by Exchange Act Rule  0-11(a)(2) and identify the filing
             for which the  offsetting fee was paid  previously.  Identify the
             previous filing by registration  statement number, or the Form or
             Schedule and the date of its filing.

       (1)   Amount previously paid:
- --------------------------------------------------------------------------------
       (2)   Form, Schedule or Registration Statement No.:
- --------------------------------------------------------------------------------
       (3)   Filing Party:
- --------------------------------------------------------------------------------
       (4)   Date Filed:
- --------------------------------------------------------------------------------





                                        December 21, 2001

VIA EDGAR
Securities and Exchange Commission
Division of Investment Management
Judiciary Plaza
450 Fifth Street, N.W.
Washington, DC  20549

     Re:  MFS(R)Series  Trust IV (File Nos.  2-54607 and  811-2594) on behalf of
          MFS(R)Mid Cap Growth Fund and  MFS(R)Money  Market Fund;  MFS(R)Series
          Trust V (File Nos.  2-38613 and 811-2031) on behalf of  MFS(R)Research
          Fund; and  MFS(R)Series  Trust VII (File Nos. 2-68918 and 811-3090) on
          behalf of MFS(R)Capital Opportunities Fund (each a "Fund")

  Ladies and Gentlemen:

     On behalf of each Trust, enclosed herewith pursuant to rule 20a-1 under the
Investment  Company Act of 1940, as amended,  Rule 14a-6(b) under the Securities
Exchange Act of 1934, as amended (the "1934 Act"), and Rule 101 of Regulation ST
is a definitive copy of additional solicitation materials mailed to shareholders
with respect to each Fund's Special  Meetings of  Shareholders  adjourned  until
December 27, 2001.

     If you have any questions,  please do not hesitate to call the  undersigned
at (617) 954-5047.

                                        Sincerely,




                                        James F. DesMarais
                                        Assistant General Counsel

JFD/bjn
Enclosures