---
title: "Send Message"
method: POST
path: "/v1/messages/send"
tags: ["Messaging"]
---

# Send Message

`POST /v1/messages/send`

## Request

- Base URL: `https://api.sandbox.usenash.com`
- URL: `https://api.sandbox.usenash.com/v1/messages/send`
- Auth: none declared

Send a one-off SMS or email to the courier, customer, or pickup business associated with a delivery. The recipient is resolved from the order's contact details on file (phone for SMS, email for email).

## Request body

- SendMessageInput
  - `order_id` string, required
  - `recipient_type` 'courier' | 'customer' | 'pickup_business', required: Enum for message recipient types.
  - `message_type` 'sms' | 'email', required: Enum for message delivery types.
  - `message` string, required

## Other responses

- `422`: Unprocessable Content

---

[API](https://skmtc.dev/nash/apis/nash-api.md) - [All operations](https://skmtc.dev/nash/apis/nash-api/llms.txt) - [OpenAPI document](https://skmtc.dev/nash/apis/nash-api/revisions/e3713837c5c9?raw)