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Email Unsubscribe Rate Calculator

Calculate email unsubscribe rate from delivered recipients and unique opt-outs, then compare your result with a target and translate the rate into unsubscribes per 1,000.

Delivered Emails, Unsubscribes and Target Rate

Use figures from the same email campaign, audience scope and reporting period so the numerator and denominator describe the same activity.

Emails successfully delivered in the selected campaign or reporting period.
Unique recipients who unsubscribed in the same campaign scope.
Your own monitoring or historical threshold.
Email Unsubscribe Rate-
Delivered Recipients Not Unsubscribed-
Unsubscribes per 1,000 Delivered-
Unsubscribes at Target Rate-
Headroom vs Target Count-
Target Comparison-

Example: 0.25% Email Unsubscribe Rate

Delivered emails: 10,000

Unique unsubscribes: 25

Unsubscribe rate: 0.25%

Unsubscribes per 1,000 delivered: 2.50

Target unsubscribe rate: 0.30%

Target unsubscribe count: 30

Headroom to target: 5 unsubscribes

The sample inputs shown here match the default calculator values so the example can be reproduced directly.

Formula

Unsubscribe Rate = Unique Unsubscribes / Delivered Emails x 100Unsubscribes per 1,000 = Unique Unsubscribes / Delivered Emails x 1,000Target Unsubscribes = Delivered Emails x Target Rate

Input Checklist

Same scope: Keep delivery, engagement, conversion and cost figures from one comparable campaign or reporting window.Unique metrics: Use unique recipient counts where the calculator requests unique opens, clicks or unsubscribes.Decision context: Read email metrics together instead of optimizing one rate in isolation.

Reporting Note

Email platforms can count deliveries, opens, clicks, bounces, conversions and unsubscribes differently. When comparing campaigns, keep the provider, attribution window, recipient scope and unique-versus-total counting method consistent so a change in measurement is not mistaken for a change in performance.

Add This Email Unsubscribe Rate Calculator to Your Website

Embed this free calculator on an email marketing, analytics or campaign-planning resource page. The ?embed=1 view keeps the calculator focused and supports responsive iframe resizing.

Embedding requirement: Keep the SolveIndex attribution and source link visible and unchanged.
How to Interpret the Result
Unsubscribe rate is a negative-engagement and list-health signal. Use the same delivered-email denominator and campaign scope when comparing periods. A 0.30% target can be a useful monitoring reference, but it is not a universal law. Compare the result with your own send type, audience and historical baseline, and use the guide for current provider benchmark context.
Marketing - Email Marketing
Use the metric in context
Learn the metric definition, formula, reporting scope, common mistakes and how it connects with the rest of the email funnel.
Read the Email Unsubscribe Rate GuideBrowse all guides
Email Unsubscribe Rate Calculator Frequently Asked Questions
Divide unique unsubscribes by successfully delivered emails and multiply by 100. The calculator also shows unsubscribes per 1,000 delivered recipients.
Delivered emails focus the denominator on recipients who actually received the message and had an opportunity to unsubscribe. Keep the denominator consistent with your email provider's reporting.
A 0.3% rate can be used as a monitoring reference, but it is not a universal standard. Compare it with your own campaign type, audience and historical baseline, and use the guide for current provider benchmark context.
Common causes include excessive frequency, weak relevance, expectation mismatch, poor segmentation, stale acquisition sources and major changes in content or offers.
No. The goal is to reduce avoidable opt-outs, not make unsubscribing difficult. A clear preference and unsubscribe path supports permission-based email marketing and can reduce frustration.
Move between engagement, deliverability, conversion and financial-return metrics without mixing their definitions.
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Email Unsubscribe Rate Calculator Disclaimer: Results are planning and reporting calculations based on the inputs you provide. Email platforms can use different tracking, attribution and counting rules, so compare figures only when definitions and reporting windows are consistent.