Email Campaign Performance Calculator
Use consistent counts from one campaign to compare delivery and engagement metrics rather than relying on a single headline rate.
How to use this calculator
- Enter sent, delivered, unique opens, unique clicks, attributed conversions and unsubscribes for the same campaign.
- Check that every input uses the stated units and covers the same period, population or project scope.
- Change one assumption at a time when comparing scenarios.
Formula used by email campaign performance calculator
Rate = relevant count ÷ stated denominator × 100
- Rate = relevant count ÷ stated denominator × 100
- Privacy features, automated scanners, bot filtering, consent, deliverability and attribution can change what opens and clicks represent.
- Inputs are validated against the tool-specific constraints; displayed results are rounded for readability.
Worked examples
Worked example
A campaign with 9,700 delivered messages and 3,200 unique opens has a unique open rate of about 33.0%.
The calculator validates nested campaign counts and calculates six rates with clear denominators.
The calculator validates nested campaign counts and calculates six rates with clear denominators.
Understanding the result
Use consistent counts from one campaign to compare delivery and engagement metrics rather than relying on a single headline rate.
Privacy features, automated scanners, bot filtering, consent, deliverability and attribution can change what opens and clicks represent.
Important notes
Privacy features, automated scanners, bot filtering, consent, deliverability and attribution can change what opens and clicks represent.
Treat the result as an estimate for the assumptions entered; verify important specifications against the relevant source or professional guidance.
Frequently asked questions
Why show click-to-open as well as click-through rate?
Click-through uses delivered messages as the denominator; click-to-open uses unique opens and answers a different question.
Are opens a perfect engagement measure?
No. Mail privacy features and automated systems can make opens an imperfect signal.
How should I use this result?
Enter sent, delivered, unique opens, unique clicks, attributed conversions and unsubscribes for the same campaign.
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Related explanations
Learn the method behind the number or compare the terminology before using the calculator.
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This page provides a calculation tool plus explanatory information so you can understand what the result means and when the underlying method may not fit your situation.