Generally. Except as otherwise expressly provided herein, all notices and other communications shall have been duly given and shall be effective # when delivered, # when transmitted via telecopy (or other facsimile device), # the Business Day following the day on which the same has been delivered prepaid or on an invoice arrangement to a reputable national overnight air courier service, or # the third Business Day following the day on which the same is sent by certified or registered mail, postage prepaid, in each case to the respective parties at the address or telecopy numbers set forth on [Schedule 11.1] or as otherwise provided.