Any notices or communications required in this Agreement or permitted to be given shall be in writing and delivered personally, by a recognized courier service, by a recognized overnight delivery service, by facsimile or by registered or certified mail, postage prepaid, at the applicable address or facsimile number indicated on the signature pages hereto (or such other address as provided by the parties from time to time in accordance with this Section 4.2 ) and any such notice shall be deemed to have been given and received on the day it is personally delivered or delivered by courier or overnight delivery service or sent by facsimile or, if mailed, when actually received.