---
title: "Send message"
slug: "sens-sms-send"
updated: 2026-10-08T04:15:14Z
published: 2026-10-08T04:15:14Z
canonical: "api.ncloud-docs.com/sens-sms-send"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://api.ncloud-docs.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Send message

Available in Classic and VPC

This sends SMS/LMS/MMS messages.

## Request

This section describes the request format. The method and URI are as follows:

| Method | URI |
| --- | --- |
| POST | /sms/v2/services/{serviceId}/messages |

### Request headers

For information about the request headers common to all Simple & Easy Notification Service APIs, see [Simple & Easy Notification Service request headers](/docs/en/sens-overview#%EC%9A%94%EC%B2%AD%ED%97%A4%EB%8D%94).

### Request path parameters

You can use the following path parameters with your request:

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `serviceId` | String | Required | SMS service ID - See [Get project list](/docs/en/sens-project-list). |

### Request body

You can include the following data in the body of your request:

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `type` | String | Required | Message type - `SMS` \| `LMS` \| `MMS` - `SMS`: SMS message - `LMS`: LMS message - `MMS`: MMS message |
| `contentType` | String | Optional | Message content type - `COMM` (default) \| `AD` - `COMM`: General - `AD`: Advertisement |
| `countryCode` | String | Optional | Country code - `82` (default) - See [List of countries where international SMS can be sent](https://guide.ncloud-docs.com/docs/en/sens-smspolicy). |
| `from` | String | Required | Caller ID - Only numbers registered via the console can be used. - See [Register caller ID](https://guide.ncloud-docs.com/docs/en/sens-callingno#%EB%B0%9C%EC%8B%A0-%EB%B2%88%ED%98%B8-%EB%93%B1%EB%A1%9D). |
| `subject` | String | Optional | Default message subject (byte) - 0-40 - Available only for LMS and MMS |
| `content` | String | Required | Content of default message (byte) - SMS: 0-90 - LMS, MMS: 0-2000 |
| `messages` | Array | Required | Message information: [messages](/docs/en/sens-sms-send#messages) - Maximum of 100 entries allowed. |
| `files` | Array | Optional | Attachment file list: [files](/docs/en/sens-sms-send#files) - Available only for MMS. - Even if `type` is set to `MMS`, the message will be sent as LMS if there are no attachments. |
| `reserveTime` | String | Optional | Reserved date and time - YYYY-MM-DD HH:mm format. - Enter for reserved delivery. |
| `reserveTimeZone` | String | Optional | Reserved time zone - `Asia/Seoul` (default) - See [Time zone list](https://en.wikipedia.org/wiki/List_of_tz_database_time_zones). |

              Note

              

- If the maximum supported size is exceeded, some content will be truncated and sent.
- Message subject and content encoding is based on EUC-KR and sending fails if unsupported emoji characters are included.
- The `subject` and `content` within `messages` have higher priority than the default `subject` and `content`.
- If it is an MMS type but has no attachments, it will be sent as an LMS.
- `reserveTime`: You cannot schedule a reserved message for a time within 10 minutes of the current time.

#### `messages`

The following describes `messages`.

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `to` | String | Required | Recipient number - Only numbers can be entered. |
| `subject` | String | Optional | Individual message subject (byte) - 0-40 - Available only for LMS and MMS - If not entered, default message subject is applied. |
| `content` | String | Optional | Individual message content (byte) - SMS: 0-90 - LMS, MMS: 0-2000 - If not entered, default message content is applied. |

#### `files`

The following describes `files`.

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `fileId` | String | Required | Attachment ID - See [Upload files](/docs/en/sens-sms-attachment-create). |

### Request example

The request example is as follows:

```
curl --location --request POST 'https://sens.apigw.ntruss.com/sms/v2/services/ncp:sms:kr:50*********1:sens/messages' \
--header 'x-ncp-apigw-timestamp: {Timestamp}' \
--header 'x-ncp-iam-access-key: {Access Key}' \
--header 'x-ncp-apigw-signature-v2: {API Gateway Signature}' \
--header 'Content-Type: application/json' \
--data '{
    "type": "MMS",
    "contentType": "COMM",
    "countryCode": "82",
    "from": "010********",
    "subject": "Delivery Notification",
    "content": "Hello. This is for notifying your delivery status.",
    "messages": [
        {
            "to": "010********",
            "subject": "Delivery Noti",
            "content": "Hello, ******. This is for notifying your delivery status."
        }
    ],
    "files": [
        {
            "fileId": "a136************************74f7"
        }
    ],
    "reserveTime": "2025-11-25 09:50",
    "reserveTimeZone": "Asia/Seoul"
}'
```

## Response

This section describes the response format.

### Response body

The response body includes the following data:

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `requestId` | String | - | Request ID |
| `requestTime` | String | - | Request date and time - YYYY-MM-DDTHH:mm:ss.sss format |
| `statusCode` | String | - | Status code - It follows HTTP status code rules. - `202`: Success. - Others: Failure. |
| `statusName` | String | - | Status - `success` \| `fail` - `success`: Success - `fail`: Failure |

### Response status codes

For information about the response status codes common to all Simple & Easy Notification Service APIs, see [Simple & Easy Notification Service response status codes](/docs/en/sens-overview#%EC%9D%91%EB%8B%B5%EC%83%81%ED%83%9C%EC%BD%94%EB%93%9C).

### Response example

The response example is as follows:

```
{
    "requestId": "RSLA-*************-****-********-IZJQgZEc",
    "requestTime": "2025-11-25T09:39:40.535",
    "statusCode": "202",
    "statusName": "success"
}
```