Bounce rate calculator
Calculate bounced messages as a share of attempted sends.
Your inputs stay in this browser. No account needed.
Your result
Add your inputs, or try the example, to see your result here.
Provider classifications and delayed bounces can differ.
How to use this tool
- Add hard and soft bounces and divide by attempted messages.
- Show delivered estimate as attempts minus bounces.
What the result tells you
- Provider classifications and delayed bounces can differ.
- No universal safe threshold is asserted.