Structural Collapse in Physical Mail Volume
#1USPS first-class mail volume peaked at 103 billion pieces in 2001 and had fallen to approximately 23 billion by 2023 — a 78% decline over two decades, with no reversal in sight. Enterprise transactional mail (bills, statements, remittances) has migrated to digital channels at an accelerating rate driven by e-invoicing mandates in the EU and voluntary adoption in North America. The COVID-19 pandemic permanently accelerated digital document adoption across industries that had been laggards, removing the cultural and procedural inertia that had slowed the shift.