Glossary
Webhooks
Messages that a service sends to a web address you provide when something happens, instead of you asking repeatedly.
ValidReach Team · Updated 2026-10-26
In practice
A sending platform can post to your endpoint each time a message bounces or a person unsubscribes. Your endpoint should answer quickly, check that the request really comes from the service, and handle the same event arriving twice.
Verification and sending
ValidReach can call your endpoint when a file verification job finishes, so you do not need to poll for it. See the API reference for the payload.