Email Open Rate Calculator
Calculate email open rate, campaign engagement, delivered emails and email marketing performance. Evaluate the effectiveness of your subject lines and email campaigns instantly.
Email Open Rate Calculator
Email Marketing • Engagement • Campaign Analytics
Email Campaign Data
Campaign Results
Open Rate
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Click Rate
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Click-to-Open Rate
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Conversion Rate
0.00%
Campaign Rating
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Enter campaign data and click "Calculate Open Rate" to analyze email marketing performance.
Delivered
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Opened
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Clicks
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Performance
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Measure Email Marketing Engagement
Email Open Rate is one of the most important email marketing KPIs. It measures the percentage of delivered emails that recipients actually open, helping marketers evaluate subject lines, audience engagement and overall campaign effectiveness.
Features
Complete Email Campaign Analysis
Calculate email open rate, click rate, click-to-open rate (CTOR) and conversion rate instantly to evaluate email marketing performance.
Open Rate
Measure the percentage of delivered emails that recipients opened.
Click Rate
Analyze how many recipients clicked links inside your email campaign.
CTOR Analysis
Measure click-to-open rate to evaluate email content quality.
Instant Insights
Instantly evaluate campaign engagement and identify optimization opportunities.
How It Works
Calculate Email Open Rate In Three Steps
Enter Campaign Data
Enter delivered emails, opens, clicks and conversions.
Calculate Metrics
Instantly calculate Open Rate, CTR, CTOR and conversion metrics.
Optimize Campaigns
Improve subject lines, email content and audience targeting.
Email Marketing Guide
What Is Email Open Rate?
Email Open Rate is the percentage of successfully delivered emails that recipients open. It helps marketers measure audience engagement, subject line effectiveness and overall email campaign performance.
Open Rate = (Opened Emails ÷ Delivered Emails) × 100
For example, if you successfully deliver 10,000 emails and 2,850 recipients open them, your email open rate is 28.5%. Higher open rates generally indicate stronger subject lines and better audience targeting.
Why Email Open Rate Matters
Better Subject Lines
Compare subject lines to determine which emails generate the highest engagement.
Audience Engagement
Measure how interested subscribers are in your email campaigns.
Campaign Optimization
Improve send times, personalization and segmentation using engagement metrics.
Increase ROI
Better open rates often lead to more clicks, conversions and revenue.
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Browse →FAQ
Frequently Asked Questions
Improve Your Email Marketing
Measure email engagement, analyze campaign performance and optimize your email marketing strategy with our free Email Open Rate Calculator.
Calculate Open Rate →