---
title: "getSendBlockList"
slug: "ai-application-service-cloudoutboundmailer-getsendblocklist"
tags: ["Cloud Outbound Mailer"]
updated: 2026-09-17T09:35:44Z
published: 2026-09-17T09:35:44Z
canonical: "api.ncloud-docs.com/ai-application-service-cloudoutboundmailer-getsendblocklist"
---

> ## 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.

# getSendBlockList

Available in Classic and VPC

Get the default time at which the system automatically blocks sending for a specific recipient

## Request

The following describes the request format for the endpoint. The request format is as follows:

| Method | URI |
| --- | --- |
| GET | /send-block |

### Request headers

For information about the headers common to all Cloud Outbound Mailer APIs, see [Cloud Outbound Mailer request headers](/docs/en/ai-application-service-cloudoutboundmailer#%EC%9A%94%EC%B2%AD%ED%97%A4%EB%8D%94).

### Request query parameters

You can use the following query parameters with your request:

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `size` | Integer | Optional | Number of records per page - 10 (default) |
| `page` | Integer | Optional | Page index to view - 0 or greater |
| `sort` | String | Optional | Sort by - `createUtc` (default) - `createUtc`: creation date and time - property (,asc\|desc) format - `asc` (default) - Multiple sort criteria can be set |
| `targetAddress` | String | Required | Recipient's email address to view the blocked delivery history for |

### Request example

The following is a sample request.

```
curl --location --request GET 'https://mail.apigw.ntruss.com/api/v1/send-block?targetAddress=test01%40ncp-mail.com' \
--header 'x-ncp-apigw-timestamp: {Timestamp}' \
--header 'x-ncp-iam-access-key: {Access Key}' \
--header 'x-ncp-apigw-signature-v2: {API Gateway Signature}'
```

## Response

The following describes the response format.

### Response body

The following describes the response body.

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `content` | List | - | Details for the blocked delivery list - See [SendBlockHistoryResponse](/docs/en/common-vapidatatype-nessendblockcontent) |
| `registerStatus` | String | - | Whether the email is currently blocked from delivery |
| `expectedDeleteDate` | Object | - | Date and time of scheduled unblocking - See [NesDateTime](/docs/en/common-vapidatatype-nesdatetime) |
| `last` | Boolean | - | It indicates whether this is the last page |
| `totalElements` | Integer | - | Total number of records |
| `totalPages` | Integer | - | Total number of pages |
| `first` | Boolean | - | It indicates whether this is the first page |
| `numberOfElements` | Integer | - | Number of records in the current page |
| `size` | Integer | - | Number of records per page |
| `number` | Integer | - | Index of the current page - 0 or greater |
| `sort` | List | - | Sort by - See [Sort](/docs/en/common-vapidatatype-nessort) |

### Response status codes

For information about the HTTP status codes common to all Cloud Outbound Mailer APIs, see [Cloud Outbound Mailer response status codes](/docs/en/ai-application-service-cloudoutboundmailer#%EC%9D%91%EB%8B%B5%EC%83%81%ED%83%9C%EC%BD%94%EB%93%9C).

### Response example

The following is a sample response.

```
{
  "content": [
    {
      "targetAddress": "test01@ncp-mail.com",
      "actionType": {
        "label": "Delete",
        "code": "D"
      },
      "actionRequesterType": {
        "label": "System",
        "code": "SYSTEM"
      },
      "requestDate": {
        "utc": 1593076560930,
        "formattedDate": "2020-06-25",
        "formattedDateTime": "2020-06-25 18:16:00 930"
      },
      "historySid": 62633,
      "sendResultCode": null,
      "sendResultMessage": null
    },
    {
      "targetAddress": "test01@ncp-mail.com",
      "actionType": {
        "label": "Create",
        "code": "C"
      },
      "actionRequesterType": {
        "label": "Other customer",
        "code": "OTHER_CUSTOMER"
      },
      "requestDate": {
        "utc": 1592471705229,
        "formattedDate": "2020-06-18",
        "formattedDateTime": "2020-06-18 18:15:05 229"
      },
      "historySid": 62632,
      "sendResultCode": "RECIPIENT_ADDRESS_ERROR",
      "sendResultMessage": "550 5.1.1 <test01@ncp-mail.com>: Recipient address rejected: User unknown in local recipient table\n"
    }
  ],
  "registerStatus": "Not blocked",
  "expectedDeleteDate": null,
  "last": true,
  "totalElements": 8,
  "totalPages": 1,
  "first": true,
  "numberOfElements": 8,
  "size": 10,
  "number": 0,
  "sort": [
    {
      "direction": "DESC",
      "property": "createUtc",
      "ignoreCase": false,
      "nullHandling": "NATIVE",
      "ascending": false,
      "descending": true
    }
  ]
}
```