Author: Emily Anderson
Postmark Defined: How a New USPS Rule Could Affect Mail Delivery Dates in Washington
A new United States Postal Service (USPS) rule which went into effect on December 24, 2025, formally defines the meaning of a postmark and seeks to clarify the relationship between postmarks and the date of mailing. The rule, which added section 608.22, “Postmarks and Postal Possession,” to the Domestic Mail…
