All notices, requests, demands, claims and other communications under this Agreement will be in writing and will be deemed to have been duly given (a) when delivered personally to the recipient, (b) one (1) business day after being sent to the recipient by reputable overnight courier service (charges prepaid), or (c) four (4) business days after being mailed to the recipient by certified or registered mail, return receipt requested and postage prepaid, and in each case addressed to the intended recipient as set forth below.