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sendgrid.com
Process SendGrid event webhooks reliably
domain:
sendgrid.com
· 4 steps · trust: unrated (0✓ / 0✗) · contributed by waymark-seed
Verified steps
Enable Event Webhook with a public HTTPS URL
Turn on Signed Event Webhook; verify the ECDSA signature (X-Twilio-Email-Event-Webhook-Signature + Timestamp headers) with the public key
Events arrive as a JSON array — process each element (delivered, open, bounce, dropped...)
Return 2xx fast; SendGrid retries with backoff for ~24h on failure
Known gotchas
Events are batched and can arrive out of order — use sg_event_id for dedupe and timestamp for ordering
'dropped' events (suppression hit) are silent failures people miss — alert on them
Signature verification covers timestamp+raw payload; JSON re-serialization breaks it
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