Glossary
Email logs
Records of what happened to each message: accepted, deferred, delivered or bounced, with the reason.
ValidReach Team · Updated 2026-10-26
In practice
Sending platforms and mail servers keep them for a limited time. A bounce entry carries a status code and a text reason, which is what you read to learn whether an address is permanently bad or only temporarily unavailable.
Verification and sending
Logs tell you what failed after a send. Verification aims to remove the failures before it.