16.1. Any notice required or permitted to be given hereunder shall be in writing. Any notice required or permitted shall be sufficiently given if sent by registered or certified mail or delivered, in person or by overnight courier, if to the Proprietary Trader at his or her address as set forth on the signature page hereof, or at such other address as the Proprietary Trader shall designated by notice to the Company duly given as set forth herein, and if to the Company at the address stipulated above, or at such other address as the Company shall designate by notice to Proprietary Trader duly given as set forth above. An Email notice of the Company to the Proprietary Trader's Email account and/or an electronic message sent to the Proprietary Trader's platform account twill also be considered a written notice, 24 hours after it has been sent by the Company.