All notices required or permitted to be given hereunder shall be in writing and sent by overnight delivery service (such as Federal Express), in which case notice shall be deemed given on the day after the date sent, or by personal delivery, in which case notice shall be deemed given on the date received, or by certified mail, in which case notice shall be deemed given three (3) days after the date sent, or by electronic mail (with copy by overnight delivery service), in which case notice shall be deemed given on the date sent, to the appropriate address set forth below or at such other place or places as either Buyer or Seller may, from time to time, respectively, designate in a written notice given to the other in the manner described above. In such case a copy of such notice shall also be sent by e-mail to counsel for the party at the e-mail address as appears below.