Email Open, Click & Delivery Rate Calculator

How do you calculate email delivery, open and click rates?

Delivery rate uses delivered messages divided by sent messages. This tool's open and click rates use unique openers and unique clickers divided by delivered messages. Use one completed cohort and consistent provider definitions. Recorded opens and clicks can include automated activity.

How to use this tool

1. Review the field definitions below and choose one reporting period or scenario.
2. Replace the example values in Enter your scenario. Use plain numbers with a decimal point where needed.
3. Select Calculate results. Correct any highlighted field, then calculate again.
4. Review the result alongside the formulas and interpretation notes.
5. Select Download results CSV to save inputs, results and the method. Open it in your spreadsheet app. Reset example restores every default; reloading the page also restores the example.

Calculating and downloading a file use the values on this page. Configure and test your actual workflow using the linked setup guides.

Fields and defaults

Sent messages

Messages sent in one completed cohort. Default: 1000. Accepted range: 0–10000000, whole numbers.

Delivered messages

Messages reported as delivered for that cohort; at most sent messages. Default: 980. Accepted range: 0–10000000, whole numbers.

Unique openers

Recipients with at least one recorded open; at most delivered messages. Use unique counts, not total events. Default: 392. Accepted range: 0–10000000, whole numbers.

Unique clickers

Recipients with at least one recorded click; at most delivered messages. Clickers may exceed tracked openers. Default: 49. Accepted range: 0–10000000, whole numbers.

Formula and worked example

Delivery rate = delivered ÷ sent × 100

Recorded open rate = unique openers ÷ delivered × 100

Recorded click rate = unique clickers ÷ delivered × 100

Unconfirmed delivery count = sent − delivered

Illustrative default: 1,000 sent, 980 delivered, 392 unique openers and 49 unique clickers yield 98% delivery, 40% recorded opens and 5% recorded clicks.

Interpret the result

Delivery describes the supplied provider outcome; it does not establish inbox placement. The sent-minus-delivered remainder is labeled unconfirmed delivery rather than automatically classified as bounces.

Image preloading and automated link scans can influence recorded engagement. Use provider bot classifications and downstream actions when interpreting a campaign.

Clicks may be recorded when an open pixel was not loaded. Enter unique counts from the same cohort and keep the provider's counting rules with your exported record.

Fix an input or download problem

Complete every required field and keep counts within the stated range. Related counts must describe the same cohort. If you change a value, calculate again to refresh the results. A zero denominator produces an unavailable rate.

The CSV button appears after a successful calculation. Check your browser's downloads list if the file is not immediately visible. Enable JavaScript for the interactive controls; formulas, examples and field definitions remain readable on this page.

Related definitions and setup

References

• Mailgun automated open and click detection
• Chirply email sender setup

About these resources

Chirply publishes these explanations and planning tools to help teams define, test and measure their workflows. AI-assisted drafts are checked against the cited product references and documented formulas. Examples are illustrative. Read the review method, explore product capabilities or check current plans.

For a correction, email support@chirply.io with the page address and the specific detail.