All notices, requests, consents, claims, demands, waivers, and other communications hereunder shall be in writing and shall be deemed to have been given: (a) when delivered by hand (with written confirmation of receipt); (b) when received by the addressee if sent by a nationally recognized overnight courier (receipt requested); (c) on the date sent by facsimile or email (with confirmation of transmission) if sent during normal business hours of the Goff Parties, and on the next business day if sent after normal business hours of the Goff Parties; or (d) on the third day after the date mailed, by certified or registered mail, return receipt requested, postage prepaid. Such communications must be sent to the respective parties at the addresses set forth in this Section  10 (or to such other address that may be designated by a Party from time to time in accordance with this Section  10 ).