Free tool
Bounce Rate Calculator
Enter how many emails you sent and how many bounced to get your bounce rate and a plain-English verdict against the ~2% safe threshold.
How it works
- 1Enter emails sent and emails bounced.
- 2We calculate your bounce rate.
- 3See whether you're in the safe zone.
Questions
Frequently asked
What is a good bounce rate?
Under ~2% is generally considered safe. Above that, mailbox providers may start throttling or filtering your mail.
How do I lower it?
Verify your list before every send so invalid addresses are removed before they bounce.
Can I check a whole list at once?
This free tool checks one at a time. To verify a full list — email, phone and company together — upload a CSV to BounceBlock and preview your first 100 rows free.
Stop wasting hours on dead leads.
Upload your list and see how clean it really is — free, in under two minutes.
100 free creditsNo credit cardCancel anytime