Email Unsubscribe Rate Calculator computes your unsubscribe rate, list churn, complaint ratio, subscriber lifetime, and list decay projection. Enter your campaign data and get instant metrics with industry benchmarks, trend tracking across campaigns, and actionable tips to reduce list attrition.
Email Unsubscribe Rate Calculator
Calculate email unsubscribe rate, list churn, subscriber lifetime, complaint ratio, and list decay projection. Track trends across campaigns. Free online calculator.
Campaign Data
List & Frequency (for projections)
Industry
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Unsubscribe Rate
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Complaint Rate
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Total Churn (per send)
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Avg Subscriber Lifetime
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Est. Annual Churn
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Complaint-to-Unsub Ratio
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Retention Rate
About Email Unsubscribe Rate Calculator
Features
- Unsubscribe rate with industry benchmark
- List churn analysis — unsubs + bounces + complaints combined
- Complaint ratio — spam reports vs unsubscribes
- Subscriber lifetime estimate based on churn
- List decay projection — estimated list size after 3, 6, 12 months
- Campaign trend tracker — spot increasing attrition over time
How to Use
- Enter delivered, unsubscribed, bounced, and spam complaints
- Add list size and send frequency for lifetime/decay projections
- Compare against industry benchmarks
- Track trends across multiple campaigns
Benefits
- Understand why and how fast you lose subscribers
- Project future list size based on current churn
- Catch rising unsubscribe trends early
- Free, private, runs in your browser
Frequently Asked Questions
How is unsubscribe rate calculated?
Unsubscribe Rate = (Unsubscribes / Emails Delivered) x 100. For example, 45 unsubscribes from 9,500 delivered emails = 0.47% unsubscribe rate.
What is a normal unsubscribe rate?
Below 0.5% per campaign is normal. Below 0.2% is excellent. Above 1% per send is a red flag indicating content mismatch, over-sending, or poor targeting. Industry averages range from 0.1% to 0.5%.
What is list churn?
List churn is the total rate at which subscribers leave your list, including unsubscribes, bounces, and spam complaints. Annual churn of 25-30% is typical, meaning you need to add new subscribers constantly just to maintain list size.
What is complaint rate?
Complaint rate = Spam complaints / Delivered. When someone marks your email as spam instead of unsubscribing, that's a complaint. Rate should stay below 0.1% — above 0.3% risks being blocked by ISPs.
How is subscriber lifetime estimated?
Subscriber Lifetime = 1 / Churn Rate per send. If your churn rate is 0.5% per email, a subscriber stays on average for 200 sends. Combined with send frequency, you get estimated months of retention.
Is my data stored?
No. All calculations run in your browser. Nothing is transmitted.