Each Party giving any notice required or permitted under this Agreement will give the notice in writing, and will be deemed to have been duly given: (a) when received if delivered personally; (b) when transmitted if sent by facsimile or telecopy (with transmission confirmed); (c) the day after it is sent if sent by commercial overnight courier (with receipt confirmed); (d) upon receipt if sent by certified or registered mail (return receipt requested); or (e) when transmitted if sent by email (with receipt confirmed by recipient). Notice to a Party is effective for purposes of this Agreement only if given as provided in this Section 23.9 at the address of which the sending Party has been notified in accordance with this Section 23.9 .