Wash. Rev. Code § 7.96.090
(1) If a timely correction or clarification is no longer possible, the publisher of an alleged defamatory or otherwise actionable statement may offer, at any time before trial, to make a correction or clarification. The offer must be made in writing to the person allegedly harmed by the publication and:
(a) Contain the publisher's offer to:
(2) If the person accepts in writing an offer to correct or clarify made pursuant to subsection (1) of this section:
[ 2013 c 294 s 9.]