All notices required to be given by either party to the other under this Guaranty shall be in writing and shall be effective when actually delivered or one (1) business day after being deposited with a nationally recognized overnight courier with receipt confirmed, or three (3) business days after being deposited in the United States mail, first class postage prepaid with return receipt requested, addressed to the party to whom the notice is to be given at the address shown above or to such other addresses as either party may designate to the other in writing.