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# Send OTP to email

POST https://api.etera.dev/auth/email/send-otp
Content-Type: application/json

Sends a 4-digit OTP to the provided email for sign-in or sign-up.

Reference: https://docs.etera.dev/platform/authentication/auth-api/email-auth/post-email-send-otp

## Servers

- `https://api.etera.dev/auth` (Production, default)
- `https://api-stage.etera.dev/auth` (Staging)
- `https://api-dev.etera.dev/auth` (Development)

## Request

### Body (application/json)

This endpoint expects an object.

- `email` (string, required)

## Response

### 200

OTP sent successfully

- `success` (boolean, optional)
- `message` (string, optional)
- `expiresIn` (double, optional) — OTP expiration time in seconds
- `isNewUser` (boolean, optional) — Whether this email belongs to a new user
- `onboardingComplete` (boolean, optional) — Whether the user has completed onboarding (only included when isNewUser is false)
- `otp` (string, optional) — OTP code (only included in development mode for testing purposes)

## Errors

### 429 Too Many Requests Error

Rate limit exceeded

- `error` (ErrorResponseError, required)

## Types

### ErrorResponseError

- `code` (string, required) — Machine-readable error code
- `message` (string, required) — Human-readable error message
- `timestamp` (datetime, required) — Error occurrence timestamp
- `details` (ErrorResponseErrorDetails, optional) — Additional error context
- `requestId` (string, optional) — Unique request identifier for tracing

### ErrorResponseErrorDetails

Additional error context

## Examples

**Request**

```json
{
  "email": "test@example.com"
}
```

**Response**

```json
{
  "success": true,
  "message": "OTP sent successfully",
  "expiresIn": 300,
  "isNewUser": true,
  "onboardingComplete": false,
  "otp": "1234"
}
```

**SDK Code**

```python
import requests

url = "https://api.etera.dev/auth/email/send-otp"

payload = { "email": "test@example.com" }
headers = {"Content-Type": "application/json"}

response = requests.post(url, json=payload, headers=headers)

print(response.json())
```

```javascript
const url = 'https://api.etera.dev/auth/email/send-otp';
const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: '{"email":"test@example.com"}'
};

try {
  const response = await fetch(url, options);
  const data = await response.json();
  console.log(data);
} catch (error) {
  console.error(error);
}
```

```go
package main

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

func main() {

	url := "https://api.etera.dev/auth/email/send-otp"

	payload := strings.NewReader("{\n  \"email\": \"test@example.com\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(res)
	fmt.Println(string(body))

}
```

```ruby
require 'uri'
require 'net/http'

url = URI("https://api.etera.dev/auth/email/send-otp")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n  \"email\": \"test@example.com\"\n}"

response = http.request(request)
puts response.read_body
```

```java
import com.mashape.unirest.http.HttpResponse;
import com.mashape.unirest.http.Unirest;

HttpResponse<String> response = Unirest.post("https://api.etera.dev/auth/email/send-otp")
  .header("Content-Type", "application/json")
  .body("{\n  \"email\": \"test@example.com\"\n}")
  .asString();
```

```php
<?php
require_once('vendor/autoload.php');

$client = new \GuzzleHttp\Client();

$response = $client->request('POST', 'https://api.etera.dev/auth/email/send-otp', [
  'body' => '{
  "email": "test@example.com"
}',
  'headers' => [
    'Content-Type' => 'application/json',
  ],
]);

echo $response->getBody();
```

```csharp
using RestSharp;

var client = new RestClient("https://api.etera.dev/auth/email/send-otp");
var request = new RestRequest(Method.POST);
request.AddHeader("Content-Type", "application/json");
request.AddParameter("application/json", "{\n  \"email\": \"test@example.com\"\n}", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let headers = ["Content-Type": "application/json"]
let parameters = ["email": "test@example.com"] as [String : Any]

let postData = JSONSerialization.data(withJSONObject: parameters, options: [])

let request = NSMutableURLRequest(url: NSURL(string: "https://api.etera.dev/auth/email/send-otp")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "POST"
request.allHTTPHeaderFields = headers
request.httpBody = postData as Data

let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
  if (error != nil) {
    print(error as Any)
  } else {
    let httpResponse = response as? HTTPURLResponse
    print(httpResponse)
  }
})

dataTask.resume()
```