Why unsubscribe rate matters
It’s the list telling you the truth. Opens can be inflated and clicks can be idle curiosity, but an unsubscribe is a deliberate “stop.”
A rising rate usually means frequency, relevance, or expectations are off, and it predicts spam complaints, which threaten deliverability for everything you send.
Reading unsubscribe patterns
- Per-campaign spikes point at that campaign’s content or audience
- Steady climbs point at frequency or list fatigue
- High exits from new subscribers point at a mismatched welcome
- Compare against complaint rate, the harsher sibling
Questions
Is a low unsubscribe rate always good?
Not by itself. A silent, unengaged list doesn’t unsubscribe, it just ignores you. Low exits with low clicks is apathy, not loyalty.
Should you make unsubscribing hard?
No. A blocked exit becomes a spam complaint, which hurts far more. One-click unsubscribe is also required by major inbox providers for bulk senders.