20-1656. Proof of sending as proof of notice A. Proof of sending a notice of cancellation and the reasons for cancellation or of intention not to renew to the named insured by mail at the address shown in the policy is sufficient proof of the notice required by this article. B. Any method of proof retained by the insurer for sending a notice of cancellation by any method other than by mail is sufficient proof of the notice required by this article.
Arizona Legal Code