All notices, requests, demands and other communications which are required or may be given under this Agreement shall be in writing and shall be deemed to have been duly given if delivered personally or by commercial messenger or courier service, or mailed by registered or certified mail (return receipt requested), except that notices sent by mail will not be deemed given until received,  or sent via electronic mail (with acknowledgment of delivery), to the addresses specified on the signature page of this Agreement or to such other addresses as any Party may specify by notice in writing to the other.