Dead-letter queue
When a delivery exhausts its retry budget, it moves to the dead-letter queue (DLQ). Nothing is ever silently dropped — if you care about webhook reliability, you need to watch the DLQ. Most customers set up an alert (‘ping me if DLQ depth > N’) and a recurring job to triage.
What to know
Section titled “What to know”- DLQ entries retain the last response body (first 4 KB) and the full retry history.
- You can replay a DLQ entry at any time within 30 days; it re-enters the retry pipeline fresh.
- DLQ entries older than 30 days are purged.
- The DLQ is per-environment; live and test are separate.