- webhook_endpoints / webhook_deliveries schema (migration 42)
- service: dispatch + endpoint crud + hmac-sha256 signing
- delivery worker drains queue using FOR UPDATE SKIP LOCKED so multiple
api replicas can run safely without duplicate dispatch
- exponential backoff (30s → 1h cap, 8 attempts then abandoned)
- REST API under /webhooks: list/create/update/delete/rotate-secret/
list-deliveries. secret only returned at create + rotate
- header convention matches stripe-style: X-Warmbly-Signature: t=<unix>,v1=<hex>
- legacy header X-Warmbly-Token already renamed; new outbound webhook
headers are X-Warmbly-Signature / X-Warmbly-Event / X-Warmbly-Event-Id
- wired into email account connect/remove and warmup health transitions;
campaign/tracking/deliverability call sites will reuse the same
webhookService.Dispatch interface
Matthew Meszaros