SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                  SCHEDULE 13G
                                 (Rule 13d-102)

INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULE 13d-1(b),(c) AND
             (d) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2
                               (Amendment No. 6)*

                                 ZIX CORPORATION
                                (Name of Issuer)

                     Common Stock, par value $.01 per share
                         (Title of Class of Securities)

                                    98974P100
                                 (CUSIP Number)

                                December 31, 2007
             (Date of Event Which Requires Filing of this Statement)

      Check the appropriate box to designate the rule pursuant to which this
Schedule is filed.

      |_|   Rule 13d-1(b)

      |X|   Rule 13d-1(c)

      |_|   Rule 13d-1(d)

* The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter the
disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).





CUSIP No. 98974P100                       13G                  Page 2 of 6 Pages
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1.    NAMES OF REPORTING PERSONS
      George W. Haywood
--------------------------------------------------------------------------------
2.    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
         (SEE INSTRUCTIONS)
                                                                         (a) [ ]
                                                                         (b) [ ]
--------------------------------------------------------------------------------
3.    SEC USE ONLY
--------------------------------------------------------------------------------
4.    CITIZENSHIP OR PLACE OF ORGANIZATION
      U.S.A.
--------------------------------------------------------------------------------

NUMBER OF         5.     SOLE VOTING POWER                         3,842,900 (1)
SHARES
                  --------------------------------------------------------------
BENEFICIALLY      6.     SHARED VOTING POWER                         998,000 (2)
OWNED BY
                  --------------------------------------------------------------
EACH              7.     SOLE DISPOSITIVE POWER                    3,842,900 (1)
REPORTING
                  --------------------------------------------------------------
PERSON WITH       8.     SHARED DISPOSITIVE POWER                    998,000 (2)

--------------------------------------------------------------------------------
9.    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
      4,840,900
--------------------------------------------------------------------------------
10.   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES CERTAIN SHARES (SEE
      INSTRUCTIONS)                                                          [ ]
--------------------------------------------------------------------------------
11.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
      7.9%
--------------------------------------------------------------------------------
12.   TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
      IN
--------------------------------------------------------------------------------
-----------------
(1)   Includes 45,900 shares owned by Mr. Haywood's children and 264,000 shares
      underlying warrants.
(2)   Represents shares owned by spouse.



Item 1(a).

            Name of Issuer:

            Zix Corporation

Item 1(b).  Address of Issuer's Principal Executive Offices:

            2711 North Haskell Avenue, Suite 2200, LB 36, Dallas, Texas
            75204-2960

Item 2(a).  Name of Person Filing:

            George W. Haywood

Item 2(b).  Address of Principal Business Office or, if none, Residence:

            c/o Moomjian, Waite, Wactlar & Coleman, LLP, 100 Jericho Quadrangle,
            Suite 225, Jericho, New York 11753

Item 2(c).  Citizenship:

            U.S.A.

Item 2(d).  Title of Class of Securities:

            Common Stock, par value $.01 per share

Item 2(e).  CUSIP Number

            98974P100

Item 3.     If this statement is filed pursuant to Rules 13d-1(b) or 13d-2(b) or
            (c), check whether the person filing is a:
            (a)   |_|   Broker or dealer registered under Section 15 of the Act.
            (b)   |_|   Bank as defined in Section 3(a)(6) of the Act.
            (c)   |_|   Insurance company as defined in Section 3(a)(19) of the
                        Act.
            (d)   |_|   Investment company registered under Section 8 of the
                        Investment Company Act of 1940.
            (e)   |_|   An investment adviser in accordance with Rule
                        13d-1(b)(1)(ii)(E).
            (f)   |_|   An employee benefit plan or endowment fund in accordance
                        with Rule 13d-1(b)(1)(ii)(F).
            (g)   |_|   A parent holding company or control person in accordance
                        with Rule 13d-1(b)(1)(ii)(G).
            (h)   |_|   A savings association as defined in Section 3(b) of the
                        Federal Deposit Insurance Act.
            (i)   |_|   A church plan that is excluded from the definition of an
                        investment company under Section 3(c)(14) of the
                        Investment Company Act.
            (j)   |_|   Group, in accordance with Rule 13d-1(b)(1)(ii)(J).




Item 4.     Ownership.

            (a)   Amount Beneficially Owned: 4,840,900

            (b)   Percent of Class: 7.9%

            (c)   Number of shares as to which such person has:

                  (i)   sole power to vote or to direct the vote:      3,842,900

                  (ii)  shared power to vote or to direct vote:          998,000

                  (iii) sole power to dispose or to direct the disposition of:
                                                                       3,842,900

                  (iv)  shared power to dispose or to direct the disposition of:
                                                                         998,000

Item 5.     Ownership of Five Percent or Less of a Class.

            Not applicable

Item 6.     Ownership of More than Five Percent on Behalf of Another Person.

            Included as shares for which there exist sole voting and dispositive
            power are (a) 45,900 shares owned by Mr. Haywood's minor children,
            which children have the right to receipt of dividends from, and
            proceeds from the sale of, such shares and (b) 264,000 shares
            underlying warrants.

            Included as shares for which there exist shared voting and
            dispositive power are 998,000 shares owned by Mr. Haywood's spouse.
            Accordingly, Mr. Haywood's spouse would have the sole right to the
            receipt of dividends from, and the proceeds from the sale of, such
            shares.



Item 7.     Identification and Classification of the Subsidiary Which Acquired
            the Security Being Reported On By the Parent Holding Company or
            Control Person.

            Not applicable.

Item 8.     Identification and Classification of Members of the Group.

            Not applicable.

Item 9.      Notice of Dissolution of Group.

            Not applicable.

Item 10.    Certifications.

            By signing below I certify that, to the best of my knowledge and
            belief, the securities referred to above were not acquired and are
            not held for the purpose of or with the effect of changing or
            influencing the control of the issuer of the securities and were not
            acquired and are not held in connection with or as a participant in
            any transaction having that purpose or effect.



                                    SIGNATURE

      After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.

                                           February 13, 2008
                                      -------------------------
                                                (Date)


                                       /s/ George W. Haywood
                                      -------------------------
                                             (Signature)


                                          George W. Haywood
                                      -------------------------
                                          (Name and Title)