Overall Bounce Rate
Shows what percentage of your sent emails could not be delivered to recipients.
Email Deliverability Tool
Email Bounce Rate Calculator
Measure the percentage of emails that failed to reach recipients, review your delivery performance, and identify whether your email list needs attention.
Calculate Your Bounce Rate
Enter your campaign totals to receive an instant deliverability analysis.
Campaign Insights
What the Calculator Measures
The calculator turns basic campaign numbers into useful email deliverability metrics.
Delivery Rate
Estimates the percentage of sent emails accepted by recipient mail servers.
Campaign Health
Compares the result with practical ranges and provides a clear performance status.
What Is an Email Bounce Rate?
Email bounce rate is the percentage of sent emails that could not be delivered to the intended recipients. A bounce happens when a recipient's mail server rejects the message temporarily or permanently.
Monitoring this metric helps marketers protect sender reputation, maintain a healthy subscriber list, and identify technical or targeting problems before they damage future campaigns.
Email Bounce Rate Formula
Bounce Rate = (Bounced Emails ÷ Total Emails Sent) × 100
For example, suppose you send 10,000 emails and 150 emails bounce. Your bounce rate would be:
Example Calculation
(150 ÷ 10,000) × 100 = 1.50%
Hard Bounces vs Soft Bounces
A hard bounce is a permanent delivery failure. It can happen because the address does not exist, the domain is invalid, or the receiving server permanently blocks delivery. Hard-bounced addresses should normally be removed or suppressed.
A soft bounce is usually temporary. Common causes include a full mailbox, an unavailable server, a message that is too large, or a temporary security restriction. Repeated soft bounces may eventually need to be treated as permanent failures.
Simple Process
How to Use the Email Bounce Rate Calculator
Review your campaign in four simple steps without creating an account.
Enter Emails Sent
Add the total number of email messages included in your campaign.
Add Total Bounces
Enter the number of emails reported as undeliverable.
Add Bounce Types
Optionally enter hard and soft bounce totals for deeper analysis.
Review the Results
Check your bounce rate, delivery rate, and campaign health status.
How to Interpret Your Bounce Rate
| Bounce Rate | Status | Suggested Action |
|---|---|---|
| Below 1% | Excellent | Continue monitoring and maintaining list quality. |
| 1% to 2% | Healthy | Review new subscriber sources and routine list hygiene. |
| Above 2% to 5% | Needs Attention | Validate addresses and investigate bounce reasons. |
| Above 5% | High Risk | Pause large sends and clean the list before continuing. |
Ways to Reduce Email Bounces
Use Double Opt-In
Ask new subscribers to confirm their addresses before joining your active mailing list.
Clean Your List
Remove invalid, inactive, and repeatedly bouncing addresses from future sends.
Validate Email Addresses
Detect misspellings, temporary addresses, and invalid domains during signup.
Authenticate Your Domain
Configure SPF, DKIM, and DMARC to improve trust with receiving mail servers.
Monitor Acquisition Sources
Compare bounce rates by form, campaign, partner, or imported subscriber source.
Watch Campaign Trends
Review changes over time instead of judging performance from only one campaign.
Questions and Answers
Email Bounce Rate Calculator FAQs
Find answers to common questions about bounced emails and delivery metrics.
A lower bounce rate is generally better. A rate below 2% is often considered healthy, although normal performance can vary by industry, audience, campaign type, and list source.
Divide the number of bounced emails by the total number of emails sent, then multiply the result by 100.
Common causes include old subscriber data, invalid addresses, purchased lists, typing errors, inactive domains, full inboxes, server restrictions, and poor sender reputation.
Hard-bounced addresses should normally be suppressed from future campaigns because the delivery failure is considered permanent.
An occasional soft bounce is not always serious. However, repeated soft bounces can reduce list quality and may indicate inactive mailboxes or ongoing delivery problems.
Yes. You can calculate email bounce and delivery rates without registering or submitting campaign information to a server.
No. All calculations take place locally inside the visitor's browser using JavaScript.