Unsubscribe Rate
Unsubscribe rate measures the percentage of email recipients who opt out from each campaign or list — the leading indicator of list health, content relevance, and sender reputation issues requiring intervention.
Why This Matters
Unsubscribe rate calculation: unsubscribes / delivered emails per campaign. Healthy benchmarks: under 0.5% per campaign for engaged lists, under 0.2% for highly engaged lists. Spikes above 1% indicate serious issues (irrelevant content, list quality problems, brand confusion). Unsubscribe rate trends matter more than absolute level — increasing rates signal deteriorating list health requiring attention. Excessive unsubscribes damage sender reputation through ESP signaling. Best practice: monitor per-campaign and rolling-period unsubscribe rates.
Frequently Asked Questions
Frequently Asked Questions
What unsubscribe rate signals problems?
Per-campaign rate above 0.5% concerning; above 1% indicates serious issues. Rolling 30-day rates above 5% problematic. Compare to baseline — sustained increases more concerning than occasional spikes.
How can unsubscribe rates be reduced?
Better list segmentation (sending relevant content to relevant audiences), improved content quality and value, frequency reduction (over-mailing major unsubscribe driver), preference centers (allowing partial opt-down vs full opt-out), and re-engagement campaigns (identifying disengaged subscribers before they unsubscribe).