All notices and other communications from the Company to the Holder, or vice versa, shall be deemed delivered and effectively given (a) upon personal delivery to the party to be notified, (b) when sent by confirmed electronic mail or facsimile if sent during normal business hours of the recipient; if not, then on the next business day, (c) five (5) days after having been sent by certified mail, return receipt requested, postage prepaid, or (d) one (1) day after deposit with a nationally recognized overnight courier, specifying next day delivery; at such address as may have been furnished to the Company or the Holder, as the case may be, in writing by the Company or such Holder from time to time.