Email Open Rate is designed for the exact search intent behind “email open rate calculator”. Calculate email open rate from opens and delivered emails, with a clear denominator and modern tracking caveats. Calculate email open rate from opens and delivered emails, with a clear denominator and modern tracking caveats. Formula A common formula is unique opens ÷ delivered emails × 100 . Delivered emails are typically sent emails minus bounces. Tracking caveat Open tracking usually relies on image loading and can be distorted by privacy protections, image blocking and automated activity. Worked example: 2,000 unique opens from 10,000 delivered emails gives a 20% open rate. Common practical uses include Verify campaign dashboards; Compare newsletter sends; Check delivered-vs-opened data; Build reporting summaries. Important limitations: Open tracking is not perfectly reliable. Platforms can define unique opens differently. Privacy features can inflate or obscure opens. Key questions this page should answer include: How is email open rate calculated? Unique opens divided by delivered emails, multiplied by 100, under the common definition. Should I divide by sent or delivered emails? Delivered emails is the cleaner denominator when bounces are known. Why can open rate be inaccurate? Tracking pixels can be blocked, preloaded or affected by privacy features. Is open rate the same as click rate? No. Can I compare rates across platforms directly? Only after checking that their metric definitions match. The page should stay focused on this differentiator: Formula-first page with a necessary modern email-tracking reliability caveat. The tool should appear before the explanatory copy so a visitor can complete the task immediately, then use the supporting content to verify the method and understand the result. The explanation should keep terminology consistent with the calculator or converter interface, because a mismatch between labels in the tool and labels in the content can create confusion and weaken search-intent alignment. Where the calculation or transformation has edge cases, the page should state them directly instead of implying that every input is valid.
How to use this tool
Formula
A common formula is unique opens ÷ delivered emails × 100. Delivered emails are typically sent emails minus bounces.
Tracking caveat
Open tracking usually relies on image loading and can be distorted by privacy protections, image blocking and automated activity.
Examples
Example
2,000 unique opens from 10,000 delivered emails gives a 20% open rate.
Common use cases
- Verify campaign dashboards
- Compare newsletter sends
- Check delivered-vs-opened data
- Build reporting summaries
Frequently asked questions
How is email open rate calculated?
Unique opens divided by delivered emails, multiplied by 100, under the common definition.
Should I divide by sent or delivered emails?
Delivered emails is the cleaner denominator when bounces are known.
Why can open rate be inaccurate?
Tracking pixels can be blocked, preloaded or affected by privacy features.
Is open rate the same as click rate?
No.
Can I compare rates across platforms directly?
Only after checking that their metric definitions match.