All communications described in clause (a) above and all other notices, demands, requests and other communications made in connection with this Agreement shall be effective and be deemed to have been received (i) if delivered by hand, upon personal delivery, (ii) if delivered by overnight courier service, one (1) Business Day after delivery to such courier service, (iii) if delivered by facsimile, when sent (except that if not given during normal business hours for the recipient thereof, at the opening of business on the next Business Day of such recipient), and (iv) if delivered by e-mail, upon the sender’s receipt of an acknowledgement from the intended recipient, such as by the “ return receipt requested ” function, as available, return e-mail or other written acknowledgment (except that if not sent during normal business hours for the recipient thereof, at the opening of business on the next Business Day of such recipient).