## Create a blocked email sender

**post** `/accounts/{account_id}/email-security/settings/block_senders`

Adds a sender pattern to the email block list, preventing messages from matching
senders from being delivered.

### Path Parameters

- `account_id: string`

  Account Identifier

### Body Parameters

- `is_regex: boolean`

- `pattern: string`

- `pattern_type: "EMAIL" or "DOMAIN" or "IP" or "UNKNOWN"`

  - `"EMAIL"`

  - `"DOMAIN"`

  - `"IP"`

  - `"UNKNOWN"`

- `comments: optional string`

### Returns

- `errors: array of ResponseInfo`

  - `code: number`

  - `message: string`

  - `documentation_url: optional string`

  - `source: optional  { pointer }`

    - `pointer: optional string`

- `messages: array of ResponseInfo`

  - `code: number`

  - `message: string`

  - `documentation_url: optional string`

  - `source: optional  { pointer }`

- `result:  { id, created_at, is_regex, 4 more }`

  - `id: number`

    The unique identifier for the allow policy.

  - `created_at: string`

  - `is_regex: boolean`

  - `last_modified: string`

  - `pattern: string`

  - `pattern_type: "EMAIL" or "DOMAIN" or "IP" or "UNKNOWN"`

    - `"EMAIL"`

    - `"DOMAIN"`

    - `"IP"`

    - `"UNKNOWN"`

  - `comments: optional string`

- `success: boolean`

### Example

```http
curl https://api.cloudflare.com/client/v4/accounts/$ACCOUNT_ID/email-security/settings/block_senders \
    -H 'Content-Type: application/json' \
    -H "X-Auth-Email: $CLOUDFLARE_EMAIL" \
    -H "X-Auth-Key: $CLOUDFLARE_API_KEY" \
    -d '{
          "is_regex": false,
          "pattern": "test@example.com",
          "pattern_type": "EMAIL"
        }'
```

#### Response

```json
{
  "errors": [
    {
      "code": 1000,
      "message": "message",
      "documentation_url": "documentation_url",
      "source": {
        "pointer": "pointer"
      }
    }
  ],
  "messages": [
    {
      "code": 1000,
      "message": "message",
      "documentation_url": "documentation_url",
      "source": {
        "pointer": "pointer"
      }
    }
  ],
  "result": {
    "id": 2402,
    "created_at": "2019-12-27T18:11:19.117Z",
    "is_regex": true,
    "last_modified": "2019-12-27T18:11:19.117Z",
    "pattern": "x",
    "pattern_type": "EMAIL",
    "comments": "comments"
  },
  "success": true
}
```