# Add Contact to Segment

> POST /contacts/:id/segments/:segment_id — add an existing contact to a segment.

`POST /contacts/:id/segments/:segment_id`

Add an existing contact to a segment. The contact is identified in the path by either its ID or its email address.

Either `id` or `email` must be provided.

**Path parameters**

| Name | Type | Required | Description |
| --- | --- | --- | --- |
| `id` | string | No | The Contact ID. |
| `email` | string | No | The Contact Email. |
| `segment_id` | string | Yes | The Segment ID. |

**Node.js**

```js
import { MailBlastr } from 'mailblastr';

const mb = new MailBlastr('mb_xxxxxxxxx');

const { data, error } = await mb.contacts.addToSegment('e169aa45-1ecf-4183-9955-b1499d5701d3', '78261eea-8f8b-4381-83c6-79fa7120f1cf');
console.log({ data, error });
```

**Ruby**

```ruby
require "mailblastr"

Mailblastr.api_key = "mb_xxxxxxxxx"

Mailblastr::Contacts.add_to_segment("e169aa45-1ecf-4183-9955-b1499d5701d3", "78261eea-8f8b-4381-83c6-79fa7120f1cf")
```

**PHP**

```php
$mailblastr = Mailblastr::client('mb_xxxxxxxxx');

$mailblastr->contacts->addToSegment('e169aa45-1ecf-4183-9955-b1499d5701d3', '78261eea-8f8b-4381-83c6-79fa7120f1cf');
```

**Python**

```python
import mailblastr

mailblastr.api_key = "mb_xxxxxxxxx"

mailblastr.Contacts.add_to_segment("e169aa45-1ecf-4183-9955-b1499d5701d3", "78261eea-8f8b-4381-83c6-79fa7120f1cf")
```

**Go**

```go
package main

import (
    "fmt"
    "io"
    "net/http"
)

func main() {
    req, _ := http.NewRequest("POST", "https://api.mailblastr.com/contacts/e169aa45-1ecf-4183-9955-b1499d5701d3/segments/78261eea-8f8b-4381-83c6-79fa7120f1cf", nil)
    req.Header.Set("Authorization", "Bearer mb_xxxxxxxxx")
    res, _ := http.DefaultClient.Do(req)
    defer res.Body.Close()
    out, _ := io.ReadAll(res.Body)
    fmt.Println(string(out))
}
```

**Rust**

```rust
use reqwest::Client;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let res = Client::new()
        .post("https://api.mailblastr.com/contacts/e169aa45-1ecf-4183-9955-b1499d5701d3/segments/78261eea-8f8b-4381-83c6-79fa7120f1cf")
        .header("Authorization", "Bearer mb_xxxxxxxxx")
        .send()
        .await?;
    println!("{}", res.text().await?);
    Ok(())
}
```

**Java**

```java
import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;

var client = HttpClient.newHttpClient();
var request = HttpRequest.newBuilder()
    .uri(URI.create("https://api.mailblastr.com/contacts/e169aa45-1ecf-4183-9955-b1499d5701d3/segments/78261eea-8f8b-4381-83c6-79fa7120f1cf"))
    .header("Authorization", "Bearer mb_xxxxxxxxx")
    .method("POST", HttpRequest.BodyPublishers.noBody())
    .build();
var response = client.send(request, HttpResponse.BodyHandlers.ofString());
System.out.println(response.body());
```

**.NET**

```csharp
using System.Net.Http;
using System.Text;

var client = new HttpClient();
var request = new HttpRequestMessage(HttpMethod.Post, "https://api.mailblastr.com/contacts/e169aa45-1ecf-4183-9955-b1499d5701d3/segments/78261eea-8f8b-4381-83c6-79fa7120f1cf");
request.Headers.Add("Authorization", "Bearer mb_xxxxxxxxx");
var response = await client.SendAsync(request);
Console.WriteLine(await response.Content.ReadAsStringAsync());
```

**cURL**

```bash
curl -X POST 'https://api.mailblastr.com/contacts/e169aa45-1ecf-4183-9955-b1499d5701d3/segments/78261eea-8f8b-4381-83c6-79fa7120f1cf' \
  -H 'Authorization: Bearer mb_xxxxxxxxx'
```

**CLI**

```bash
mailblastr contacts add-to-segment e169aa45-1ecf-4183-9955-b1499d5701d3 78261eea-8f8b-4381-83c6-79fa7120f1cf
```

### Response

```json
{
  "id": "78261eea-8f8b-4381-83c6-79fa7120f1cf"
}
```