In the event a notice or other document is required to be sent hereunder to any Stockholder, such notice or other document shall be given in writing, shall be either personally delivered to each of the Stockholders or delivered by an established delivery service by which receipts are given or mailed by first-class mail, postage prepaid, or sent by electronic mail, addressed to the party entitled to receive such notice or other document pursuant to the contact information for each party set forth on Annex A hereto.  All notices, other communications or documents shall be deemed to have been duly given: (i) at the time delivered by hand, if personally delivered; (ii) when sent, if by electronic mail (except if any error or “bounce back” electronic mail message is received by the sender and in such case, upon actual receipt by the party to whom such notice or document is being sent); (iii) five (5) Business Days after having been deposited in the mail, postage prepaid, if mailed by first class mail; and (iv) on the first Business Day with respect to which a reputable air courier guarantees delivery.