All notices and other communications pursuant to this letter agreement must be in writing and must be given by personal or courier delivery, e-mail or first class mail, certified or registered with return receipt requested, and will be deemed to have been duly given upon receipt if personally delivered or delivered by courier, on the date of transmission if transmitted by e-mail, or three (3) business days after mailing if mailed, to the addresses of the Company and you contained in the records of the Company at the time of such notice. Any party may change such party’s address for notices by notice duly given pursuant to this Section 17.