---
title: "Send message"
method: POST
path: "/conversations/{id}/messages"
tags: ["conversations"]
---

# Send message

`POST /conversations/{id}/messages`

Send a message in an existing conversation.

Use this endpoint when a participant replies in an active conversation.

Behavior:
- Validates participant access and conversation lock state.
- Sends an email notification when the recipient is inactive.

## Path parameters

- `id` string, required — Conversation ID

## Request body

- object
  - `body` string, required — Message body

## Response `201`

Message created

- object
  - `id` string, required — Unique identifier for the message
  - `conversationId` string, required — Conversation this message belongs to
  - `sender` object, required — User that sent the message
    - `id` string, required — Unique identifier for the user
    - `username` string, required — Public username of the user
    - `joined` string, date-time — ISO timestamp when the user account was created
    - `avatar` string, uri — URL to the user's avatar image
    - `cover` string, uri — URL to the user's cover image
    - `profile` string — Information about the user
    - `reviews` integer, required — Total number of reviews the user has received
    - `rating` number, required — Confidence-based rating between 0 and 5
    - `score` number, required — Average rating between 0 and 5
    - `sales` integer, required — Total number of sales the user has made
    - `purchases` integer, required — Total number of purchases the user has made
  - `body` string, required — Content of the message
  - `createdAt` string, nullable — Timestamp when the message was created
  - `viewedAt` string, nullable — Timestamp when the message was viewed
  - `attachments` MessageAttachment[] — Images attached to the message
    - `id` string, required — Attachment identifier
    - `imageId` string, required — Cloudflare image identifier
    - `url` string, uri, required — Public URL for the attachment

## Other responses

- `404` — Conversation not found

---

[API](https://skmtc.net/managem/apis/managem-api.md) · [All operations](https://skmtc.net/managem/apis/managem-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/managem/managem-api/versions/e8d78a3a2e8b/schema)