---
title: "Create a communication"
method: POST
path: "/communications"
---

# Create a communication

`POST /communications`

## Request

- Base URL: `https://sandbox.checkhq.com`
- URL: `https://sandbox.checkhq.com/communications`
- Auth: API key in header `Authorization`
- TypeScript: <https://skmtc.dev/checkhq/apis/check-api/docs/communications/post.ts> (a function with typed inputs; its response is checked against the schema)

## Request body

- object
  - `company` string, required: ID of the company that the communication is in reference to
  - `type` string: The type of communication.
  - `email` object
    - `to` string[], required: List of emails the email is being sent to.
    - `from` string, required: Sender of the email.
    - `cc` string[]: List of emails to be copied on the email.
    - `subject` string, required: The subject of the email.
    - `message` string, required: The message content of the email.
  - `message` object

## Response `200`

200

- object
  - `id` string
  - `company` string
  - `type` string
  - `originator` string
  - `email` object
    - `to` string[]
    - `from` string
    - `cc` string[]
    - `subject` string
    - `noreply` boolean
    - `message` string
  - `message` unknown
  - `created_at` string
  - `conversation_history` object[]
    - `originator` string
    - `message` string
    - `sent_at` string

## Other responses

- `400`: 400

## Changes

- **2026-11-03** `5a54f5eb888b`: 1 info
  - endpoint added

[Operation history](https://skmtc.dev/checkhq/apis/check-api/changes/communications/post.md)

---

[API](https://skmtc.dev/checkhq/apis/check-api.md) - [All operations](https://skmtc.dev/checkhq/apis/check-api/llms.txt) - [OpenAPI document](https://skmtc.dev/checkhq/apis/check-api/revisions/5a54f5eb888b?raw)