All notices and other communications hereunder shall be in writing and shall be (i) delivered by hand, (ii) sent by email transmission, or (iii) sent by certified mail or by a nationally recognized overnight delivery service, charges prepaid, to the address set forth on  Appendix B  hereto (or such other address for a party as shall be specified by like notice). Each such notice or other communication shall be deemed to have been duly given and to be effective (x) if delivered by hand, immediately upon delivery if delivered on a business day during normal business hours and, if otherwise, on the next business day; (y) if sent by email transmission, immediately upon confirmation that such transmission has been successfully transmitted on a business day before or during normal business hours and, if otherwise, on the business day following such confirmation; or (z) if sent by a nationally recognized overnight delivery service, on the day of delivery by such service or, if not a business day, on the first business day after delivery, or if sent by certified mail, on the fifth (5 th ) business day following mailing.