California Code, Code of Civil Procedure - CCP § 116.330

(1) Cause a copy of the claim to be mailed to the defendant by any form of mail providing for a return receipt.

(2) On receipt of proof that the claim was served as provided in paragraph (1), issue an order scheduling the case for hearing in accordance with subdivision (a) and directing the parties to appear at the time set for the hearing with witnesses and documents to prove their claim or defense.

(3) Cause a copy of the order setting the case for hearing and directing the parties to appear, to be served upon the parties by any form of mail providing for a return receipt.