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Click-to-Open Rate Calculator

Calculate your click-to-open rate (CTOR) to measure email content effectiveness and engagement quality.

Calculate Your CTOR

What is Click-to-Open Rate (CTOR)?

Click-to-Open Rate (CTOR) is a key email marketing metric that measures the percentage of recipients who clicked on a link after opening your email. Unlike standard click-through rate (CTR), which is calculated based on total emails sent, CTOR focuses specifically on the engagement quality of those who actually opened the email.

This metric provides valuable insights into how compelling and relevant your email content is to your audience. A high CTOR indicates that your email copy, design, and calls-to-action effectively motivate readers to take the desired action. It essentially measures the effectiveness of your email content once someone has shown initial interest by opening it.

For example, if 250 people opened your email and 40 of them clicked a link, your CTOR would be 16%. This tells you that 16% of people who were interested enough to open your email found the content compelling enough to click through.

CTOR vs CTR: What's the Difference?

Click-to-Open Rate (CTOR)

Formula: (Clicks ÷ Opens) × 100

Measures: Content effectiveness among those who opened

Best for: Evaluating email content quality, CTAs, and design

Click-Through Rate (CTR)

Formula: (Clicks ÷ Delivered) × 100

Measures: Overall campaign effectiveness

Best for: Evaluating subject lines and overall campaign performance

CTOR Benchmarks

Below 10%

Content needs significant improvement to drive action.

10-15%

Average performance with room for optimization.

15-20%

Good engagement indicating effective content.

Above 20%

Excellent - highly compelling content and CTAs.

Ways to Improve Your CTOR

Create Clear, Compelling CTAs

Use action-oriented language and make your CTAs stand out visually. Be specific about what happens when they click, and create a sense of urgency or value.

Optimize Email Design

Use responsive design, clear hierarchy, and strategic placement of links. Ensure CTAs are visible without scrolling and use contrasting colors to make them stand out.

Deliver Relevant Content

Match email content to subscriber expectations and interests. Use segmentation and personalization to ensure the content resonates with each recipient.

Use Strategic Link Placement

Place links naturally within your content where readers are most engaged. Include multiple link opportunities without overwhelming the reader.

Test Different Approaches

A/B test CTA copy, button colors, placement, and content structure. Continuously optimize based on what drives the highest engagement.

Create Scannable Content

Use short paragraphs, bullet points, and clear headings. Make it easy for readers to quickly understand the value and find the CTA.

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