Glossary
Bounce rate
The percentage of sent messages that bounced.
ValidReach Team · Updated 2026-10-26
In practice
It is bounced ÷ sent × 100. Track hard and soft separately, because only hard bounces say the address is bad. Mailbox providers and sending platforms publish the rates they consider acceptable, so check the limits that apply to you.
Example
10,000 sent and 150 hard bounces gives a hard bounce rate of 1.5%.
Verification and sending
The most direct way to lower a hard bounce rate is to verify the list and remove invalid addresses before the send.