For the purpose of the Plan, and except as specifically set forth herein, notices and all other communications provided for in the Plan shall be in writing and shall be deemed to have been duly given when hand-delivered or mailed by United States certified mail, return receipt requested, postage prepaid, addressed to the Participant or Employee at his or her last known address, and to the Company at Atlantic Capital Bank, N.A., 3280 Peachtree Road, Suite 1600, Atlanta, GA 30305, provided that all notices to the Company shall be directed to the attention of the Human Resources Department; or to such other address as either party may have furnished to the other in writing in accordance herewith, except that notice of change of address shall be effective only upon receipt.