# Send Zalo message with attached photo

## HTTP request

\ <mark style="color:yellow;">**`POST`**</mark> [https://rest.esms.vn/MainService.svc/json/SendZaloFollowerMessage\_V5\_post\_json/](http://rest.esms.vn/MainService.svc/json/SendZaloFollowerMessage_V5_post_json/)

* **Content Type:** <mark style="color:orange;">application/json</mark>
* **Response Type:** <mark style="color:orange;">application/json</mark>

```json
curl --location 'http://rest.esms.vn/MainService.svc/json/SendZaloFollowerMessage_V5_post_json/' \
--header 'Content-Type: text/plain' \
--header 'Cookie: ASP.NET_SessionId=asfgp2dj1kt4kbg1yzuo35ky; ASP.NET_SessionId=5xcbl12ska5q5wocug3chmjz' \
--data '{
    "ApiKey": "{{ApiKey}}",
    "SecretKey": "{{SecretKey}}",
    "OAID": "{{OAID}}",
    "CallbackUrl": "{{CallbackUrl}}",
    "RequestId": "{{RequestId}}",
    "Payload": {
        "recipient": {
            "user_id": "{{user_id}}"
        },
        "message": {
            "text": "{{text}}",
            "attachment": {
                "type": "template",
                "payload": {
                    "template_type": "media",
                    "elements": [
                        {
                            "media_type": "image",
                            "url": "{{url}}"
                        }
                    ]
                }
            }
        }
    }
}'
```

* **Body request**

<table><thead><tr><th width="166">Parameter</th><th width="123">Type</th><th width="140" data-type="checkbox">Required</th><th>Description</th></tr></thead><tbody><tr><td>ApiKey</td><td>string</td><td>true</td><td>Your API Key.</td></tr><tr><td>SecretKey</td><td>string</td><td>true</td><td>Your Secret Key.</td></tr><tr><td>OAID</td><td>string</td><td>true</td><td><p>Zalo OA Id is the Zalo Official Account Id of the organization. It can be obtained by accessing to the Zalo administrator page.</p><p><strong>Note: Pre-registration is required.</strong></p></td></tr><tr><td>user_id</td><td>string</td><td>true</td><td>The identification value of user at Zalo.</td></tr><tr><td>text</td><td>string</td><td>true</td><td>Text content to send to users Maximum limit is 2,000 characters</td></tr><tr><td>url</td><td>string</td><td>true</td><td><p>Image path </p><p>Supported image formats: jpg and png Maximum size: 1MB</p></td></tr><tr><td>RequestId</td><td>string</td><td>false</td><td>Partner ID passed to block duplicates and check if needed.
<br>Maximum length 50 characters.
<br>Each RequestId passed is valid for blocking for 24 hours.</td></tr><tr><td>CallbackUrl</td><td>string</td><td>false</td><td>The webhook URL that will receive the status of message after it processed to the operator. It is used for determine whether the SMS is succcessfully delivered to the receiver or failed.<br>See the sample request at <a href="https://samplefordevelopers.esms.vn/#20f85e1f-3d9e-4ff4-bc4f-8d9c9edbc88a">here</a>.<br>More details at <a href="../callback-url">here</a>.</td></tr></tbody></table>

***

* **Response:**

{% tabs %}
{% tab title="100" %}

```json
{
    "CodeResult": "100",
    "CountRegenerate": 0,
    "SMSID": "d8e0f1f0702544b2acb456ca9ccfd111250"
}
```

**Valid request.**
{% endtab %}

{% tab title="101" %}

```json
{
    "CodeResult": "101",
    "CountRegenerate": 0,
    "ErrorMessage": "Authorize Failed"
}
```

**Invalid credential.**
{% endtab %}
{% endtabs %}

* **Response body**

| Parameter    | Type   | Description                                  |
| ------------ | ------ | -------------------------------------------- |
| CodeResult   | string | Response code.                               |
| SMSID        | string | The message id eSMS system.                  |
| ErrorMessage | string | The error message if the request is invalid. |

* *<mark style="color:yellow;">**The detail of error code can refer at**</mark>* [**Table of error codes**](https://developers.esms.vn/en/esms-api/table-of-error-codes) **.**
* *<mark style="color:yellow;">**Get the  sample of code for programing languagues to use in Postman refer at**</mark>* [**Link  of code samples**](https://samplefordevelopers.esms.vn/#850974b9-12cf-46f5-946c-e8e15aa3585b)**.**