All notice between the Parties hereunder may be given by courier service, registered mail, fax or email. Any notice, if sent by courier service, shall be deemed to have been served on the delivery date; if sent by registered mail, shall be deemed to have been served five (5) days after the posting date on the receipt; if sent by fax, shall be deemed to have been served when a confirmation report of transmission is recorded by the sender's facsimile machine; and if by email, shall be deemed to have been served when a confirmation report of transmission is shown on the sender's computer.