Structural Collapse of Physical Mail Volume
#1USPS First-Class Mail volume peaked at 103.5 billion pieces in 2001 and has fallen to approximately 23 billion pieces by 2024 — a 78% absolute decline — with the downward trajectory uninterrupted for 22 consecutive years. Enterprise adoption of e-invoicing mandates (the EU required B2B e-invoicing across member states by 2024-2026; Brazil's NF-e system has processed over 30 billion electronic invoices), cloud document collaboration (Microsoft 365, Google Workspace), and digital-first HR and AP workflows has structurally eliminated the business correspondence that generated the majority of enterprise mail volume. This is demand destruction at the source, not task automation — the work physically does not exist to be done.