Washington Certificate of Service By Electronic Filing is a document used to certify that a court filing was served electronically. This type of service is available in Washington state for certain types of documents. It is commonly used for pleadings and other documents that are served electronically. The document contains information about the document served, the recipient, the date of service, and the method of service. There are two types of Washington Certificate of Service By Electronic Filing: a standard certificate of service and a certificate of service with proof of delivery. The standard certificate includes the document served, the recipient, the date of service, and the method of service. The certificate of service with proof of delivery includes the same information plus a proof of delivery showing that the document was delivered to the recipient.