Email Deliverability Rate Calculator
Calculate the percentage of sent email messages reported as delivered, based on compatible campaign counts.
How to use this calculator
- Enter sent and delivered counts from the same email campaign reporting window.
- Check that all inputs use the same units, time period and population scope.
- Change one assumption at a time when comparing scenarios.
Formula used by email deliverability rate calculator calculator
Deliverability rate = delivered messages ÷ sent messages × 100%.
- Deliverability rate = delivered messages ÷ sent messages × 100%.
- Delivery to a mail server does not guarantee inbox placement. Use the email platform’s definitions and monitor hard bounces, complaints and authentication separately.
- The tool validates entered values and formats results for readability; it does not verify assumptions against external records.
Worked examples
Worked example
9,720 delivered messages from 10,000 sent.
9,720 ÷ 10,000 × 100 = 97.2%.
Reported delivery rate is 97.2%.
Understanding the result
Calculate the percentage of sent email messages reported as delivered, based on compatible campaign counts.
Delivery to a mail server does not guarantee inbox placement. Use the email platform’s definitions and monitor hard bounces, complaints and authentication separately.
Important notes
Delivery to a mail server does not guarantee inbox placement. Use the email platform’s definitions and monitor hard bounces, complaints and authentication separately.
Treat the result as an estimate based on the entered inputs. For regulated, engineering, employment, tax or business decisions, check applicable official rules, specifications and professional guidance.
Frequently asked questions
Does delivered mean inboxed?
No. It generally means the receiving server accepted the message; spam filtering may still affect placement.
Should rejected messages count as delivered?
No, use the delivery status defined by the sending platform and keep the measurement window consistent.
How should I use the result?
Delivery to a mail server does not guarantee inbox placement. Use the email platform’s definitions and monitor hard bounces, complaints and authentication separately.
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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.