Cal. Civil Code § 17 : California Civil Code — Preliminary Provisions — Notice or communication required to be mail by registered mail Date: 14 Sep 2016 TEXT PDF Current through the 2016 Legislative Session Wherever any notice or other communication is required by this code to be mailed by registered mail, the mailing of such notice or other communication by certified mail shall be deemed to be a sufficient compliance with the requirements of law. Ca. Civ. Code § 17