All notices, requests, demands and other communications under this Agreement shall be in writing and shall be deemed duly given (i) if delivered by hand and receipted for by the party addressed, on the date of such receipt, (ii) if mailed by domestic certified or registered mail with postage prepaid, on the third business day after the date postmarked, or (iii) if delivered by e-mail message, on the date such message was sent. Addresses for notice to either party are as shown on the signature page of this Agreement or as subsequently modified by written notice.