Delivery webhooks

SendGrid Event Webhook JSON.

Sending Domains Inboxes Webhooks

Events as a signed JSON array.

POST the SendGrid Event Webhook shape. HMAC over timestamp and body.

Join waitlist Read the docs

POST https://hooks.acme.test/capsule

Event types

processed delivered deferred bounce dropped spamreport

Signature

X-Capsule-Signature: sha256=...

HMAC-SHA256 over {timestamp}.{body}

Body

events.json
1 [{ "event": "delivered", "email": "user@acme.test", "campaign_id": "cmp_123", "unique_args": { "campaign_id": "cmp_123", "site": "docs" } }]

Tatami and replay

Point Tatami at this endpoint as a SendGrid source. Set X-Capsule-Unique-Args when you send and those keys come back on each event. We do not emit open or click. Replay dead letters from the endpoint page.

Add a webhook

Same JSON Tatami already knows how to read.

Join waitlist Sending

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