EX-99.(a)(1)(vi)

This announcement is neither an offer to purchase nor a solicitation of an offer to sell Shares (as defined below). The Offer (as defined below) is made only by the Offer to Purchase, dated January 8, 2014, and the related Letter of Transmittal and any amendments or supplements thereto, and is being made to all holders of Shares. The Offer is not being made to (nor will tenders be accepted from or on behalf of) holders of Shares in any jurisdiction in which the making of the Offer or the acceptance thereof would not be in compliance with the securities, “blue sky” or other laws of such jurisdiction. In those jurisdictions where applicable laws require the Offer to be made by a licensed broker or dealer, the Offer shall be deemed to be made on behalf of Purchaser (as defined below) by one or more registered brokers or dealers licensed under the laws of such jurisdiction to be designated by Purchaser.

Raptor Oak Acquisition Corporation, a Delaware corporation (“Purchaser”), a wholly owned subsidiary of OC Acquisition LLC, a Delaware limited liability company (“Parent”), which is a wholly owned subsidiary of Oracle Corporation, a Delaware corporation (“Oracle”), is offering to purchase all of the issued and outstanding shares of common stock, par value $0.0001 per share (the “Shares”), of Responsys, Inc., a Delaware corporation (the “Company”), at a purchase price of $27.00 per Share (the “Offer Price”), net to the seller in cash, without interest thereon and subject to any required tax withholding, upon the terms and subject to the conditions set forth in the Offer to Purchase, dated January 8, 2014, and in the related Letter of Transmittal (which, together with the Offer to Purchase, as they may be amended or supplemented from time to time, collectively constitute the “Offer”). Stockholders of record who tender directly to American Stock Transfer & Trust Company, LLC (the “Depositary”) will not be obligated to pay brokerage fees or commissions or, except as may be set forth in the Letter of Transmittal, transfer taxes on the purchase of Shares by Purchaser pursuant to the Offer. Stockholders who hold their Shares through a broker, dealer, commercial bank, trust company or other nominee should consult such institution as to whether it charges any service fees or commissions.

THE OFFER AND THE WITHDRAWAL RIGHTS WILL EXPIRE AT 12:00 MIDNIGHT, NEW YORK

CITY TIME, AT THE END OF FEBRUARY 5, 2014, UNLESS THE OFFER IS EXTENDED.

The Offer is being made pursuant to an Agreement and Plan of Merger, dated as of December 20, 2013 (as it may be amended from time to time, the “Merger Agreement”), by and among the Company, Parent, Purchaser, and (solely with respect to performance of its obligations set forth in certain specified sections thereof) Oracle. The Merger Agreement provides, among other things, that, following the consummation of the Offer and subject to certain conditions, Purchaser will be merged with and into the Company (the “Merger”), with the Company continuing as the surviving corporation and becoming a wholly owned, direct subsidiary of Parent and a wholly owned indirect subsidiary of Oracle. In the Merger, each Share issued and outstanding immediately prior to the effective time of the Merger (other than (i) Shares held by the Company as treasury stock, by any subsidiary of the Company or by Oracle, Parent, Purchaser or any of their respective subsidiaries and (ii) Shares held by stockholders who properly exercise appraisal rights under the General Corporation Law

of the State of Delaware (the “DGCL”)) will automatically be cancelled and converted into the right to receive an amount in cash equal to the Offer Price, without interest thereon and subject to any required tax withholding. The Merger Agreement is more fully described in Section 11 of the Offer to Purchase

The Offer is not subject to a financing condition. The obligation of Purchaser to accept for payment and pay for Shares validly tendered (and not withdrawn) pursuant to the Offer is subject to the conditions set forth in Section 15 of the Offer to Purchase (collectively, the “Offer Conditions”). Among the Offer Conditions are: (i) the Minimum Condition (as defined in the Offer to Purchase), which is summarized below, and (ii) the expiration or termination of the waiting period applicable to Purchaser’s purchase of Shares pursuant to the Offer under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended. The Minimum Condition requires that there shall be validly tendered (and not withdrawn) by 12:00 midnight, New York City time, at the end of the Expiration Date (as defined below), a number of Shares (excluding Shares tendered pursuant to guaranteed delivery procedures that have not yet been delivered in settlement or satisfaction of such guarantee) that, together with any Shares owned by Oracle, Parent or Purchaser immediately prior to the first time as of which Purchaser accepts any Shares for payment pursuant to the Offer (the “Acceptance Time”), represents a majority of the Adjusted Outstanding Share Number. The term “Adjusted Outstanding Share Number” means the sum of: (A) the aggregate number of Shares issued and outstanding immediately prior to the Acceptance Time; plus (B) an additional number of Shares equal to the aggregate number of Shares issuable upon the conversion, exchange or exercise, as applicable, of all compensatory stock options, restricted stock awards and restricted stock units of the Company, and any other options, warrants or other rights to acquire, or securities convertible into or exchangeable for, Shares that, in each case, are outstanding immediately prior to the Acceptance Time and are vested or otherwise exercisable, convertible or exchangeable at or immediately prior to the Acceptance Time.

The term “Expiration Date” means February 5, 2014, unless the expiration of the Offer is extended to a subsequent date in accordance with the terms of the Merger Agreement, in which event the term “Expiration Date” means such subsequent date.

The board of directors of the Company has unanimously: (i) determined that the Merger Agreement and the transactions contemplated thereby, including the Offer and the Merger, are fair to and in the best interests of the Company’s stockholders; (ii) approved and adopted the Merger Agreement, declared the advisability of the Merger Agreement and approved the transactions contemplated thereby, including the Offer and the Merger, in accordance with the requirements of the DGCL; (iii) resolved to recommend that the stockholders of the Company accept the Offer and tender their Shares to Purchaser pursuant to the Offer; and (iv) elected that the Merger Agreement and the transactions contemplated thereby be expressly governed by Section 251(h) of the DGCL.

The Merger Agreement provides that (i) if, as of the scheduled Expiration Date, any Offer Condition is not then satisfied and has not been waived, Purchaser may, in its discretion, extend the Offer on one or more occasions, for an additional period of up to 20 business days per extension, to permit such Offer Condition to be satisfied; (ii) Purchaser may, in its discretion, extend the Offer from time to time for any period required by any rule or regulation of the SEC applicable to the Offer; and (iii) Purchaser may, in its discretion, elect to provide for a “subsequent offering period” (and one or more extensions thereof) in accordance with Rule 14d-11 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”). The Merger Agreement also provides that, subject to the parties’ respective rights to terminate the Merger Agreement, if: (i) each of the Offer Conditions (other than the Minimum Condition) is satisfied or has been waived as of the scheduled Expiration Date; and (ii) the Minimum Condition is not satisfied on such date, then, to the extent requested in writing by the Company prior to 5:00 p.m. Pacific time on such date, Purchaser will be required to extend the Offer on one or more occasions, for an additional period of up to 20 business days per extension, to permit the Minimum Condition to be satisfied. The Merger Agreement provides that Purchaser will neither be permitted nor required to extend the Offer to a date later than the End Date. The “End Date” means June 30, 2014, as it may be extended as provided in the Merger Agreement.

It is not expected that there will be a subsequent offering period. However, Oracle, Parent and Purchaser reserve the right to elect to provide for a subsequent offering period as contemplated by Rule 14d-11 promulgated under the Exchange Act. A subsequent offering period, if included, will be an additional period of not less than three (3) business days beginning on the next business day after the Expiration Date, during which any remaining holders of Shares may tender, but not withdraw, their Shares and receive the Offer Price. If Oracle, Parent or Purchaser elects to provide for a subsequent offering period, all Shares that were validly tendered during the initial offering period will be accepted immediately and paid for promptly.

If the Offer is consummated, Purchaser does not anticipate seeking the approval of the Company’s remaining stockholders before effecting the Merger. The Merger Agreement provides that Oracle, Parent, Purchaser and the Company have elected to have the Merger Agreement and the transactions contemplated thereby governed by Section 251(h) of the DGCL and that the Merger will be effected as soon as practicable following the consummation of the Offer. Under Section 251(h) of the DGCL, the consummation of the Merger would not require a vote or action by written consent of the Company’s stockholders.

The Merger Agreement provides that, without the prior written consent of the Company: (i) the Minimum Condition may not be amended or waived; (ii) no change may be made to the Offer that (a) changes the form of payment to be delivered by Purchaser pursuant to the Offer; (b) decreases the Offer Price or the number of Shares sought to be purchased by Purchaser in the Offer; (c) imposes conditions to the Offer in addition to the Offer Conditions; or (d) except as otherwise permitted by the Merger Agreement (as summarized above and in the Offer to Purchase), extend the Expiration Date.

Except as set forth above, and subject to the applicable rules and regulations of the SEC, Purchaser expressly reserves the right to waive (in whole or in part) any Offer Condition at any time and from time to time, to increase the Offer Price or to make any other changes in the terms and conditions of the Offer. Any extension, delay, termination or amendment of the Offer will be followed as promptly as practicable by a public announcement thereof, and such announcement in the case of an extension will be made no later than 9:00 a.m., New York City time, on the next business day after the Expiration Date. Without limiting the manner in which Oracle, Parent or Purchaser may choose to make any public announcement, Oracle, Parent and Purchaser currently intend to make announcements regarding the Offer by issuing a press release and making any appropriate filing with the SEC.

For purposes of the Offer, Purchaser will be deemed to have accepted for payment, and thereby purchased, Shares validly tendered and not withdrawn as, if and when it gives oral or written notice to the Depositary of its acceptance for payment of such Shares pursuant to the Offer. Upon the terms and subject to the conditions of the Offer, payment for Shares accepted for payment pursuant to the Offer will be made by deposit of the Offer Price for such Shares with the Depositary, which will act as agent for tendering stockholders for the purpose of receiving payments from Oracle, Parent and Purchaser and transmitting such payments to tendering stockholders whose Shares have been accepted for payment. If Purchaser extends the Offer, is delayed in its acceptance for payment of Shares or is unable to accept Shares for payment pursuant to the Offer for any reason, then, without prejudice to Parent’s or Purchaser’s rights under the Offer, the Depositary may retain tendered Shares on Purchaser’s behalf, and such Shares may not be withdrawn except to the extent that tendering stockholders are entitled to withdrawal rights as described in Section 4 of the Offer to Purchase and as otherwise required by Rule 14e-1(c) under the Exchange Act. Under no circumstances will Oracle, Parent or Purchaser pay interest on the Offer Price for Shares, regardless of any extension of the Offer or any delay in making such payment.

In all cases, Purchaser will pay for Shares accepted for payment pursuant to the Offer only after timely receipt by the Depositary of (i) the certificates evidencing such Shares (the “Share Certificates”) or timely confirmation of a book-entry transfer of such Shares into the Depositary’s account at The Depository Trust Company (“DTC”) (such a confirmation, a “Book-Entry Confirmation”) pursuant to the procedures set forth in Section 3 of the Offer to Purchase and (ii) the Letter of Transmittal (or a manually signed facsimile thereof), properly completed and duly executed, with all required signature guarantees and any other documents required by the Letter of Transmittal or, in the case of a book-entry transfer, an Agent’s Message (as defined in Section 2 of the Offer to Purchase) in lieu of the Letter of Transmittal and such other documents. Accordingly, tendering stockholders may be paid at different times depending upon when Share Certificates or Book-Entry Confirmations with respect to Shares are actually received by the Depositary.

Shares tendered pursuant to the Offer may be withdrawn at any time prior to the scheduled expiration of the Offer. Thereafter, tenders are irrevocable, except that Shares tendered may also be withdrawn after March 8, 2014, unless Purchaser has already accepted them for payment. For a withdrawal of Shares to be effective, the Depositary must timely receive a written or facsimile transmission notice of withdrawal at one of its addresses set forth on the back cover of the Offer to Purchase. Any notice of withdrawal must specify the name of the person who tendered the Shares to be withdrawn, the number of Shares to be withdrawn and the name in which the Share Certificates are registered, if different from that of the person who tendered such Shares. The signature(s) on the notice of withdrawal must be guaranteed by an Eligible Institution (as defined in Section 3 of the Offer to Purchase), unless such Shares have been tendered for the account of an Eligible Institution. If Shares have been tendered pursuant to the procedures for book-entry transfer as set forth in Section 3 of the

Offer to Purchase, any notice of withdrawal must specify the name and number of the account at DTC to be credited with the withdrawn Shares. If Share Certificates representing the Shares to be withdrawn have been delivered or otherwise identified to the Depositary, then, prior to the physical release of such Share Certificates, the name of the registered owner and the serial numbers shown on such Share Certificates must also be furnished to the Depositary. Purchaser will determine, in its sole discretion, all questions as to the form and validity (including time of receipt) of any notice of withdrawal, and such determination will be final and binding. No withdrawal of Shares shall be deemed to have been properly made until all defects and irregularities have been cured or waived. None of Purchaser, Parent, Oracle or any of their respective affiliates or assigns, the Depositary, Innisfree M&A Incorporated (the “Information Agent”) or any other person will be under any duty to give notification of any defects or irregularities in any notice of withdrawal or incur any liability for failure to give such notification. Withdrawals of tenders of Shares may not be rescinded and any Shares properly withdrawn will be deemed not validly tendered for purposes of the Offer. Withdrawn Shares may, however, be retendered by following one of the procedures for tendering Shares described in Section 3 of the Offer to Purchase at any time prior to the scheduled expiration of the Offer.

The information required to be disclosed by paragraph (d)(1) of Rule 14d-6 of the General Rules and Regulations under the Exchange Act is contained in the Offer to Purchase and is incorporated herein by reference.

The Company provided Purchaser with the Company’s stockholder list and security position listings for the purpose of disseminating the Offer to Purchase, the related Letter of Transmittal and related documents to holders of Shares. The Offer to Purchase and related Letter of Transmittal will be mailed to record holders of Shares whose names appear on the Company’s stockholder list and will be furnished for subsequent transmittal to beneficial owners of Shares, to brokers, dealers, commercial banks, trust companies and similar persons whose names, or the names of whose nominees, appear on the stockholder list or, if applicable, who are listed as participants in a clearing agency’s security position listing.

The receipt of cash by a holder of Shares pursuant to the Offer or the Merger will be a taxable transaction to U.S. stockholders for U.S. federal income tax purposes. See Section 5 of the Offer to Purchase for a more detailed discussion of the tax treatment of the Offer. You are urged to consult with your own tax advisor as to the particular tax consequences to you of the Offer and the Merger.

The Offer to Purchase and the related Letter of Transmittal contain important information. Stockholders should carefully read both documents in their entirety before any decision is made with respect to the Offer.

Questions or requests for assistance may be directed to the Information Agent at the address and telephone numbers set forth below. Requests for copies of the Offer to Purchase, the related Letter of Transmittal and the Notice of Guaranteed Delivery may be directed to the Information Agent or to brokers, dealers, commercial banks or trust companies. Such copies will be furnished promptly at Purchaser’s expense. Purchaser will not pay any fees or commissions to any broker or dealer or any other person (other than the Information Agent or the Depositary) for soliciting tenders of Shares pursuant to the Offer.