curl --request POST \
  --url https://yourdomain.com/send_test_email \
  --header 'Content-Type: application/json' \
  --cookie admin_cookie= \
  --data '
{
  "campaign": "test",
  "mail_data": "<string>",
  "supplied_mail_to": "<string>",
  "supplied_mail_server": "<string>",
  "supplied_smtp_from": "<string>",
  "supplied_link": "<string>",
  "supplied_id_param": "<string>",
  "target_id": "test",
  "supplied_first_name": "<string>",
  "supplied_last_name": "<string>",
  "supplied_position": "<string>",
  "supplied_custom_replacement": "<string>",
  "secure_mail": false,
  "supplied_username": "<string>",
  "supplied_password": "<string>",
  "dkim": false
}
'

import requests

url = "https://yourdomain.com/send_test_email"

payload = {
    "campaign": "test",
    "mail_data": "<string>",
    "supplied_mail_to": "<string>",
    "supplied_mail_server": "<string>",
    "supplied_smtp_from": "<string>",
    "supplied_link": "<string>",
    "supplied_id_param": "<string>",
    "target_id": "test",
    "supplied_first_name": "<string>",
    "supplied_last_name": "<string>",
    "supplied_position": "<string>",
    "supplied_custom_replacement": "<string>",
    "secure_mail": False,
    "supplied_username": "<string>",
    "supplied_password": "<string>",
    "dkim": False
}
headers = {
    "cookie": "admin_cookie=",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {cookie: 'admin_cookie=', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    campaign: 'test',
    mail_data: '<string>',
    supplied_mail_to: '<string>',
    supplied_mail_server: '<string>',
    supplied_smtp_from: '<string>',
    supplied_link: '<string>',
    supplied_id_param: '<string>',
    target_id: 'test',
    supplied_first_name: '<string>',
    supplied_last_name: '<string>',
    supplied_position: '<string>',
    supplied_custom_replacement: '<string>',
    secure_mail: false,
    supplied_username: '<string>',
    supplied_password: '<string>',
    dkim: false
  })
};

fetch('https://yourdomain.com/send_test_email', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://yourdomain.com/send_test_email",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'campaign' => 'test',
    'mail_data' => '<string>',
    'supplied_mail_to' => '<string>',
    'supplied_mail_server' => '<string>',
    'supplied_smtp_from' => '<string>',
    'supplied_link' => '<string>',
    'supplied_id_param' => '<string>',
    'target_id' => 'test',
    'supplied_first_name' => '<string>',
    'supplied_last_name' => '<string>',
    'supplied_position' => '<string>',
    'supplied_custom_replacement' => '<string>',
    'secure_mail' => false,
    'supplied_username' => '<string>',
    'supplied_password' => '<string>',
    'dkim' => false
  ]),
  CURLOPT_COOKIE => "admin_cookie=",
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json"
  ],
]);

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

curl_close($curl);

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

package main

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

func main() {

	url := "https://yourdomain.com/send_test_email"

	payload := strings.NewReader("{\n  \"campaign\": \"test\",\n  \"mail_data\": \"<string>\",\n  \"supplied_mail_to\": \"<string>\",\n  \"supplied_mail_server\": \"<string>\",\n  \"supplied_smtp_from\": \"<string>\",\n  \"supplied_link\": \"<string>\",\n  \"supplied_id_param\": \"<string>\",\n  \"target_id\": \"test\",\n  \"supplied_first_name\": \"<string>\",\n  \"supplied_last_name\": \"<string>\",\n  \"supplied_position\": \"<string>\",\n  \"supplied_custom_replacement\": \"<string>\",\n  \"secure_mail\": false,\n  \"supplied_username\": \"<string>\",\n  \"supplied_password\": \"<string>\",\n  \"dkim\": false\n}")

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

	req.Header.Add("cookie", "admin_cookie=")
	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))

}

HttpResponse<String> response = Unirest.post("https://yourdomain.com/send_test_email")
  .header("cookie", "admin_cookie=")
  .header("Content-Type", "application/json")
  .body("{\n  \"campaign\": \"test\",\n  \"mail_data\": \"<string>\",\n  \"supplied_mail_to\": \"<string>\",\n  \"supplied_mail_server\": \"<string>\",\n  \"supplied_smtp_from\": \"<string>\",\n  \"supplied_link\": \"<string>\",\n  \"supplied_id_param\": \"<string>\",\n  \"target_id\": \"test\",\n  \"supplied_first_name\": \"<string>\",\n  \"supplied_last_name\": \"<string>\",\n  \"supplied_position\": \"<string>\",\n  \"supplied_custom_replacement\": \"<string>\",\n  \"secure_mail\": false,\n  \"supplied_username\": \"<string>\",\n  \"supplied_password\": \"<string>\",\n  \"dkim\": false\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://yourdomain.com/send_test_email")

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

request = Net::HTTP::Post.new(url)
request["cookie"] = 'admin_cookie='
request["Content-Type"] = 'application/json'
request.body = "{\n  \"campaign\": \"test\",\n  \"mail_data\": \"<string>\",\n  \"supplied_mail_to\": \"<string>\",\n  \"supplied_mail_server\": \"<string>\",\n  \"supplied_smtp_from\": \"<string>\",\n  \"supplied_link\": \"<string>\",\n  \"supplied_id_param\": \"<string>\",\n  \"target_id\": \"test\",\n  \"supplied_first_name\": \"<string>\",\n  \"supplied_last_name\": \"<string>\",\n  \"supplied_position\": \"<string>\",\n  \"supplied_custom_replacement\": \"<string>\",\n  \"secure_mail\": false,\n  \"supplied_username\": \"<string>\",\n  \"supplied_password\": \"<string>\",\n  \"dkim\": false\n}"

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

"email sent"