All notices, requests, demands, claims and other communications under this Agreement must be in writing. Any notice, request, demand, claim or other communication under this Agreement will be deemed duly given (i) two (2) business days after such notice is sent by registered or certified mail, return receipt requested, postage prepaid or (ii) immediately after such notice is sent via email, in each case, addressed to the intended recipient as follows: if the Company, 11601 Wilshire Blvd, Suite 1100, Los Angeles, CA 90025, attention: Rick Anderson (randerson@catasys.com) and Susan Etzel ( setzel@catasys.com ) and if to Purchaser, at the address set forth on the signature page to this Agreement, or any other address applicable to Purchaser if the Company has been given notice of such change of address in accordance with this Section 5(g). Any party may change the address to which notices, requests, demands, claims and other communications hereunder are to be delivered by giving the other parties notice in the manner set forth in this Agreement.