A party may prove service by providing any of the following:
(1) A sworn statement;
(2) The certified mail receipt signed by the recipient;
(3) An affidavit or certificate of mailing;
(4) A signed receipt from the person who accepted the commercial delivery service or legal messenger service package; or
(5) Proof of fax transmission.
[Statutory Authority: RCW 34.05.020. 00-18-059, § 388-02-0065, filed 9/1/00, effective 10/2/00.]