support

POST `/v1/webhooks/inbound-email`

Ingest a customer's support reply from the mail edge.

인증

이 엔드포인트는 공개되어 있습니다. 자격 증명이나 조직 정보가 필요하지 않으며, 당사의 마케팅 사이트와 AI 답변 엔진이 읽는 것과 동일합니다.

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curl -X POST https://api.zinndigital.com/v1/webhooks/inbound-email \
  -H "Content-Type: application/json" \
  -d '{ "from": <string>, "message_id": <string> }'

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상세 정보

**Unauthenticated by design** — the caller is a Cloudflare Email Routing Worker with no Zinn® credential, so an HMAC over `"<timestamp>\n<body>"` in `X-Zinn-Signature` *is* the authentication. The timestamp is inside the signed material and its skew is bounded, so a captured request cannot be replayed later. This is the inbound half of support email. Before it existed the platform sent notifications from an address that accepted mail and discarded it: a customer replied, nothing happened, and neither they nor the waiting staff member was told. The ticket is resolved from a **signed token inside the `Message-ID`** we set on the outbound notification — nothing in the body, the `From` address or any other header selects a tenant, because all of those are chosen by whoever sent the mail. Redelivery is the normal case, not the exception: email is at-least-once and a lost response guarantees a retry, so a message already filed answers `200` with `duplicate: true` rather than appending a second copy. ⛔ Unlike the gateway webhooks, a message that **cannot be routed is answered `422`**, not `200`. A 2xx tells the Worker to accept the mail, and an accepted message that reaches no ticket is the exact defect this endpoint exists to remove; `422` makes the Worker reject it so the sender's own mail server bounces it back to the customer.

매개변수

이름	유형	필수	설명
`X-Zinn-Timestamp (header)`	`string`	예	Unix seconds. Inside the signed material; skew-bounded to five minutes.
`X-Zinn-Signature (header)`	`string`	예	`sha256=<hex>` HMAC over `"<timestamp>\n<body>"`.

요청 본문

이름	유형	필수	설명
`from`	`string`	예	The envelope sender. Forgeable, and treated as such — it is checked against the ticket's org and the answer becomes a flag, never a permission.
`to`	`string`	아니요	—
`message_id`	`string`	예	The message's own `Message-ID`. Stored, and unique, so a redelivery cannot append twice.
`in_reply_to`	`string`	아니요	Carries the signed ticket token when the customer replied to one of our notifications.
`references`	`string`	아니요	The full thread chain. Searched as well as `in_reply_to`, because a reply to the third message in a thread puts our id here and not there.
`subject`	`string`	아니요	—
`text`	`string`	아니요	The message body. Quoted history is trimmed engine-side and the result is length-bounded.

응답

이름	유형	필수	설명
`ticket_id`	`string`	예	—
`duplicate`	`boolean`	예	This exact message had already been filed — a success, not an error.
`sender_verified`	`boolean`	예	Whether the sender is a known address on the ticket's org. `false` still files the message, flagged for staff.
`reopened`	`boolean`	예	Whether filing it moved a `solved` ticket back to `open`.

이 엔드포인트가 반환할 수 있는 오류

400 · 422 · 503

POST /v1/webhooks/inbound-email

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