curl --request PUT \
  --url https://api.voucher-staging.allride.io/partner/v1/smtp-configuration \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "host": "smtp.example-transit.example.com",
  "port": 587,
  "security": "starttls",
  "username": "voucher-mailer",
  "fromEmail": "[email protected]",
  "fromName": "Example Transit Gutscheine"
}
'

const options = {
  method: 'PUT',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    host: 'smtp.example-transit.example.com',
    port: 587,
    security: 'starttls',
    username: 'voucher-mailer',
    fromEmail: '[email protected]',
    fromName: 'Example Transit Gutscheine'
  })
};

fetch('https://api.voucher-staging.allride.io/partner/v1/smtp-configuration', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.voucher-staging.allride.io/partner/v1/smtp-configuration"

payload = {
    "host": "smtp.example-transit.example.com",
    "port": 587,
    "security": "starttls",
    "username": "voucher-mailer",
    "fromEmail": "[email protected]",
    "fromName": "Example Transit Gutscheine"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

HttpResponse<String> response = Unirest.put("https://api.voucher-staging.allride.io/partner/v1/smtp-configuration")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"host\": \"smtp.example-transit.example.com\",\n  \"port\": 587,\n  \"security\": \"starttls\",\n  \"username\": \"voucher-mailer\",\n  \"fromEmail\": \"[email protected]\",\n  \"fromName\": \"Example Transit Gutscheine\"\n}")
  .asString();

package main

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

func main() {

	url := "https://api.voucher-staging.allride.io/partner/v1/smtp-configuration"

	payload := strings.NewReader("{\n  \"host\": \"smtp.example-transit.example.com\",\n  \"port\": 587,\n  \"security\": \"starttls\",\n  \"username\": \"voucher-mailer\",\n  \"fromEmail\": \"[email protected]\",\n  \"fromName\": \"Example Transit Gutscheine\"\n}")

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

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

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

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

	fmt.Println(string(body))

}

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.voucher-staging.allride.io/partner/v1/smtp-configuration",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "PUT",
  CURLOPT_POSTFIELDS => json_encode([
    'host' => 'smtp.example-transit.example.com',
    'port' => 587,
    'security' => 'starttls',
    'username' => 'voucher-mailer',
    'fromEmail' => '[email protected]',
    'fromName' => 'Example Transit Gutscheine'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}