Send Certified Mail Launches In-State Mailing to Help Washington Landlords Meet RCW 59.18 Requirements

OLYMPIA, Wash., June 16, 2025 /PRNewswire/ -- In response to recent updates to Washington's Residential Landlord-Tenant Act (RCW 59.18), Send Certified Mail now offers fully compliant U.S. Mail services postmarked within Washington State, helping landlords and property managers meet strict new legal mailing standards.

As of 2025, landlords must send certain notices, such as lease terminations, rent increases, and eviction communications, via Certified Mail postmarked in Washington. This new mandate aims to ensure accountability and improve delivery transparency between landlords and tenants.

Send Certified Mail offers an easy, online platform where landlords can upload PDF notices from anywhere. Letters are then printed, packed, and mailed from within Washington the same-business-day, ensuring RCW 59.18 compliance without the need for in-office mail rooms or Post Office visits.

Fully Compliant. Fast. Secure.

Send Certified Mail is designed to support Washington-based property professionals with:

Washington State Postmark Guarantee – All Certified Mail letters are mailed from within the state to meet new legal mandates.
Same-Business-Day Processing – Upload your PDF files and we mail them the same-business-day.
Affidavit of Mailing – Optional notarized proof of mailing at no extra cost.
Dual Compliance – Send both Certified and First-Class Mail simultaneously, as often required under state law.
Secure Upload – Submit letters from any device, anywhere—no special software or hardware needed.
Bulk Mailing Support – Automate recurring mailings via secure SFTP integration.
10-Year Compliance Archive – We store each letter, USPS tracking, and Return Receipt for 10 years at no additional cost.
Bank-Grade Encryption – Ensuring all tenant and property data remains private and protected.

Get Compliant Today

There are no long-term contracts, monthly minimums, or subscription fees. Landlords can send single letters or automate high-volume mailings with ease.

Washington landlords and property managers can schedule a free Live Demo to see how easy and compliant U.S. Mail can be.

Media Contact:
Lauren Gold
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888.406.1792
www.SendCertifiedMail.com