Simple Certified Mail

Simple Certified Mail Addresses USPS Postmark Timing Concerns Amid 2026 Tax and Compliance Deadlines

Simple Certified Mail Helps Businesses Strengthen Proof of Mailing and Tracking Workflows. Organizations handling deadline-sensitive mail are reassessing how they document proof of mailing following new clarity from USPS on how postmarks are applied. As tax, legal, and compliance deadlines intensify, gaps between drop-off and official postmark timing are creating new operational and documentation risks. - April 10, 2026