Best of the inbox: making unsubscribe EASIER raised revenue

Best of the inbox: making unsubscribe EASIER raised revenue
Counterintuitive, well-measured, and the kind of result that survives scrutiny.

🧪 Tests
— One-click unsub + preference center: complaints down 44% — When leaving was easy, annoyed subscribers unsubscribed instead of hitting 'spam'. Fewer complaints meant better inbox placement, and revenue per send rose 12% over the next quarter. Worth your time: the preference center let some 'leavers' downshift to monthly instead of quitting.
— List-Unsubscribe header was the unlock — Adding the one-click header (now required by Gmail/Yahoo for bulk senders) is what moved the complaint number most.

Made the cut because it ties an easy fix to a placement gain to a revenue line — the full chain.

Saved you ~1 hour and a fear-driven 'hide the unsubscribe' instinct.