Send a message

POSThttps://anjal.app/v1/inboxes/{id}/send

Sends from this inbox. The From header is derived from the inbox's primary alias. Pass verified: true when you've validated the recipient domain out-of-band (e.g. via verify-email); otherwise, sends to an address that has never replied to this inbox are rejected as a deliverability safeguard.

Pass an Idempotency-Key header so a retry never sends twice. labels tags the sent message; trackOpens: true adds an open-tracking pixel to the HTML body. The message.sent webhook payload includes labels.

Path parameters

id

required

string

Inbox UUID

Header parameters

Idempotency-Key

string

Unique value for this send (e.g. a UUID). A retry with the same key and identical request returns the stored response (header `Idempotent-Replayed: true`) and sends nothing. Same key with a different request: 409 `IDEMPOTENCY_KEY_REUSED`. Same key while the first is still running: 409 `IDEMPOTENCY_IN_PROGRESS`. Blank: 400 `IDEMPOTENCY_KEY_INVALID`. Keys are per account and expire after 24 hours; a failed send (non-2xx) frees the key.

Request body

Content-Type: application/json

`to` required string \| string[]
`cc` string \| string[]	Cc recipient(s) — subject to the same MX + verified + abuse gates as `to`.
`bcc` string \| string[]	Bcc recipient(s).
`subject` required string
`plainBody` string
`htmlBody` string
`replyTo` string	format: email
`verified` boolean	default: false
`labels` string[] \| string	Labels as an array or a comma-separated string. Stored lowercase and deduplicated; at most 32 labels of at most 64 characters, no commas.
`trackOpens` boolean	Add an open-tracking pixel (HTML body only). See `SendExtras`. default: false

Responses

200application/jsonSent

`id` string	format: uuid
`threadId` string	format: uuid
`status` string
`messageId` string

400Validation error, or IDEMPOTENCY_KEY_INVALID

403Inbox paused or plan limit reached

409application/json`IDEMPOTENCY_KEY_REUSED` (the key was used for a different request) or `IDEMPOTENCY_IN_PROGRESS` (the first request with this key is still running).

`error` required string
`code` string

502SMTP relay error

Authentication

Send your API key in the X-API-Key header (or Authorization: Bearer <key>). Any prefix accepted by this endpoint — tk_, wk_, ak_, or sa_ — is documented in the key prefix table.

Request

import { Anjal } from "anjal";

const client = new Anjal({ apiKey: process.env.MYAGENTMAIL_API_KEY! });

// POST /v1/inboxes/{id}/send
const result = await client.request("post", "/v1/inboxes/{id}/send", { params: { id: "00000000-0000-0000-0000-000000000000" } }, { body: {
  "subject": "string",
  "plainBody": "string",
  "htmlBody": "string",
  "replyTo": "agent@example.com",
  "verified": false,
  "labels": [
    "needs-review",
    "q4-campaign"
  ],
  "trackOpens": false
} });

Example response · 200

{
  "id": "00000000-0000-0000-0000-000000000000",
  "threadId": "00000000-0000-0000-0000-000000000000",
  "status": "sent",
  "messageId": "string"
}