---
title: "Reply to an inbound sender; included with the paid inbox"
method: POST
path: "/api/v1/inboxes/{inboxId}/messages/{messageId}/reply"
tags: ["Messages"]
---

# Reply to an inbound sender; included with the paid inbox

`POST /api/v1/inboxes/{inboxId}/messages/{messageId}/reply`

## Request

- Base URL: `https://machineinbox.com`
- URL: `https://machineinbox.com/api/v1/inboxes/{inboxId}/messages/{messageId}/reply`
- Auth: none required

## Path parameters

- `inboxId` string, uuid, required
- `messageId` string, uuid, required

## Headers

- `Idempotency-Key` string, required

## Request body

- object
  - `text` string, required

## Response `202`

Included reply queued. Poll the message resource for delivered or a terminal failure state.

- ReplyQueuedResponse
  - `reply` object, required
    - `id` string, uuid, required
    - `status` 'queued', required
    - `to` string, email, required
    - `subject` string, required
    - `createdAt` string, date-time, required
  - `replayed` boolean, required

## Other responses

- `400`: The request is malformed.
- `401`: A valid mailbox bearer token is required.
- `403`: The inbox is suspended.
- `404`: The inbox, message, attachment, or route was not found.
- `409`: The idempotency key was already used for another operation.
- `410`: The inbox has expired.
- `422`: The inbound sender cannot receive replies.
- `429`: A request or reply limit was reached.
- `503`: This operation is temporarily disabled.

---

[API](https://skmtc.dev/machineinbox/apis/machine-inbox-api.md) · [All operations](https://skmtc.dev/machineinbox/apis/machine-inbox-api/llms.txt) · [OpenAPI document](https://skmtc.dev/machineinbox/apis/machine-inbox-api/revisions/bcb3cf08ad6d?raw)