SMS gateway with REST API

Integrate SMS dispatch into your own application via our SMS gateway. We offer you a reliable and fast Rest API for sending SMS worldwide. It doesn’t get any more uncomplicated than this.

SMS gateway with GDPR

Reliable SMS interface

Your text message should arrive and not disappear into nirvana. We have made it our mission to ensure that your text messages reach the recipient within seconds. As the market leader, we offer the most reliable SMS gateway API and extremely attractive prices.

Our philosophy

An SMS API without compromise

Various interfaces

We offer various API interfaces such as rest/http/mail/soap/kannel for SMS sending and receiving.

Highest availability

Through multiple redundancy, we guarantee 99.9% availability and a throughput of at least 10 SMS per second.

Favorable prices without fixed costs

Sending SMS is possible from as little as one cent depending on the country and we do not charge any basic or setup fee.

European data protection

Our servers are all located in Germany and we are a telecommunications company licensed with the German Federal Network Agency.

Statistics & Delivery Reports

You receive delivery reports and have access to your itemized bill with delivery rate data at any time.

High security

The SMS gateway is "state of the art". Encryption and IP blocking ensure that unauthorized persons cannot access your data.

Send SMS

With a few lines of code you can get started

With the help of curl you can easily use our HTTP interface in PHP and send SMS.

With Go io/ioutil and net/http are imported and the SMS data can be transferred to the SMS API.

Python gives you a number of different ways to interact with our SMS gateway. For example, you can use urllib, Requests, Octopus or HTTPie.

The WebRequest.Create method does the work for you and transfers the most important data of your SMS to our gateway.

				
					#!/usr/bin/env bash
curl -X POST https://api.lox24.eu/sms \
  -H 'Content-Type: application/json' \
  -H 'X-LOX24-AUTH-TOKEN: 1234567:e3f3a759b6677959b6ebfcxxxxxxxxxx' \
  -d '{
    "sender_id": "My Sender",
    "phone": "+49751234567",
    "source": 111,
    "service_code": "direct",
    "text": "Test message",
    "delivery_at": 1573724611,
    "is_unicode": true,
    "callback_data": "123456",
    "voice_lang": "DE"
}'

				
					<?php

$uri = 'https://api.lox24.eu/sms';

$token = '1234567:e3f3a759b6677959b6ebfcxxxxxxxxxx';

$body = [
    'sender_id' => 'My Sender',
    'text' => "First line\nSecond line",
    'service_code' => 'direct',
    'phone' => '+49751234567',
    'delivery_at' => 1573724611,
    'is_unicode' => true,
    'callback_data' => '123456',
    'voice_lang' => 'DE',
];

if(!$body = json_encode($body)) {
    die('JSON encoding error!');
}

$curl = curl_init();

curl_setopt_array($curl, [
    CURLOPT_POST => true,
    CURLOPT_URL => $uri,
    CURLOPT_POSTFIELDS => $body,
    CURLOPT_HTTPHEADER => [
        "X-LOX24-AUTH-TOKEN: {$token}",
        'Accept: application/json', // or application/ld+json
        'Content-Type: application/json',
    ],
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_TIMEOUT => 20,
    CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
]);

$response = curl_exec($curl);
$code = curl_getinfo($curl, CURLINFO_HTTP_CODE);
curl_close($curl);

$data = json_decode($response, JSON_OBJECT_AS_ARRAY);

if(201 === $code) {
    echo 'Success: response data = ' . var_export($data, true);
} else {
    echo "Error: code = {$code}, data = " . var_export($data, true);
}

				
					package main

import (
	"bytes"
	"encoding/json"
	"fmt"
	"io/ioutil"
	"log"
	"net/http"
)

func main() {

	const Method = "POST"
	const URL = "https://api.lox24.eu/sms"
	const Token = "1234567:e3f3a759b6677959b6ebfcxxxxxxxxxx"

	payload := map[string]interface{}{
		"sender_id":    "My Sender",
		"phone":        "+49751234567",
		"source":       111,
		"service_code": "direct",
		"text":         "Test message",
		"delivery_at":  1593724611,
		"is_unicode":   true,
		"callback_data": "123456",
		"voice_lang": "DE",
	}

	jsonPayload, _ := json.Marshal(payload)

	client := &http.Client{}

	req, err := http.NewRequest(Method, URL, bytes.NewBuffer(jsonPayload))
	if err != nil {
		log.Fatal(err)
	}

	req.Header.Add("X-LOX24-AUTH-TOKEN", Token)
	req.Header.Add("Content-Type", "application/json")

	res, err := client.Do(req)
	if err != nil {
		log.Fatal(err)
	}

	defer res.Body.Close()

	body, err := ioutil.ReadAll(res.Body)
	if err != nil {
		log.Fatal(err)
	}

	switch res.StatusCode {
	case 201:
		fmt.Println((string(body)))
	case 400:
		fmt.Println("Error: code = 400 - Invalid input")
	case 401:
		fmt.Println("Error: code = 401 - Client ID or API key isn't active or invalid!")
	case 403:
		fmt.Println("Error: code = 403 - Account isn't activated. Please wait or contact to support!")
	default:
		fmt.Printf("Error: code = %d\n", res.StatusCode)
	}
}

				
					using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using System;
using System.IO;
using System.Net;
using System.Text;

namespace Lox24.Api
{
    class client
    {
        static void Main()
        {
            string key = "1234567:e3f3a759b6677959b6ebfcxxxxxxxxxx";
            string url = "https://api.lox24.eu/sms";

            var data = new {
                sender_id = "My Sender",
                text = "Test message",
                service_code = "direct",
                phone = "+49751234567",
                delivery_at = 1573724611,
                is_unicode = true,
                callback_data = "123456",
                voice_lang = "DE"
            };

            string postdata = JsonConvert.SerializeObject(data);

            Console.WriteLine("Post data: {0}", postdata);

            var httpWebRequest = (HttpWebRequest)WebRequest.Create(url);
            httpWebRequest.ReadWriteTimeout = 100000;
            httpWebRequest.ContentType = "application/json; charset=utf-8";
            httpWebRequest.Accept = "application/json"; // or application/ld+json
            httpWebRequest.Method = "POST";
            httpWebRequest.KeepAlive = true;
            httpWebRequest.Headers.Add("X-LOX24-AUTH-TOKEN", key);
            httpWebRequest.Credentials = CredentialCache.DefaultNetworkCredentials;

            using (var streamWriter = new StreamWriter(httpWebRequest.GetRequestStream()))
            {
                streamWriter.Write(postdata);
                streamWriter.Flush();
                streamWriter.Close();
            }
            try
            {
                using (HttpWebResponse resp = (HttpWebResponse)httpWebRequest.GetResponse())
                {

                    if(resp.StatusCode == HttpStatusCode.Created) {
                        Console.WriteLine("Success:{0} {1}", (int)resp.StatusCode, "sms resource created");
                    } else {
                        Console.WriteLine("Error: wrong response code {0} on create sms", (int)resp.StatusCode);
                    }

                    Stream respStream = resp.GetResponseStream();
                    using (StreamReader sr = new StreamReader(respStream, Encoding.UTF8))
                    {
                        string responseText = sr.ReadToEnd();
                        Console.WriteLine("responseText : {0}", responseText);
                    }
                }

            }
            catch (System.Net.WebException ex)
            {
                var webResponse = ex.Response as System.Net.HttpWebResponse;
                Console.WriteLine("Error:{0}", webResponse.StatusCode);

                switch (webResponse.StatusCode)
                {
                    case HttpStatusCode.BadRequest: // 400
                        Console.WriteLine("Error:400 Invalid input");
                        break;
                    case HttpStatusCode.Unauthorized: // 401
                        Console.WriteLine("Error:401 Client ID or API key isn't active or invalid!");
                        break;
                    case HttpStatusCode.PaymentRequired: // 402
                        Console.WriteLine("Error:402 There are not enough funds on your account!");
                        break;
                    case HttpStatusCode.Forbidden: // 403
                        Console.WriteLine("Error:403 Account isn't activated. Please wait or contact to support!");
                        break;
                    case HttpStatusCode.NotFound: // 404
                        Console.WriteLine("Error:404 Resource not found");
                        break;
                    case HttpStatusCode.InternalServerError: // 500
                    case HttpStatusCode.BadGateway: //502
                    case HttpStatusCode.ServiceUnavailable: // 503
                    case HttpStatusCode.GatewayTimeout: // 504
                        Console.WriteLine("System error! Please contact to LOX24 support!");
                        break;
                }
            }
        }
    }

				
					import json
import requests


token = "1234567:e3f3a759b6677959b6ebfcxxxxxxxxxx"

url = 'https://api.lox24.eu/sms'


data = {
    'sender_id': "My Sender",
    'text' : "Test message",
    'service_code' : "direct",
    'phone': "+49751234567",
    'delivery_at': 1573724611,
    'is_unicode': True,
    'callback_data' => '123456',
    'voice_lang' => 'DE'
}

headers = {
    'Accept': 'application/json',
    'Content-Type': 'application/json',
    'X-LOX24-AUTH-TOKEN': token,
}

print("Post data : ", json.dumps(data, indent=4))

try:
    # timeout is 100 seconds, the payload is automatically converted to json format
    res = requests.post(url, headers=headers, json=data, timeout=100)
    if res.status_code != 201: # Created
        print("Error: Wrong response code on create sms")
        res.raise_for_status()
    else:
        print(f'Success: code = {res.status_code} - sms resource created')
        print("Response: ", json.dumps(res.json(), indent=4))

except requests.HTTPError:
    if res.status_code == 400:
        print("Error:400 Invalid input")
    elif res.status_code == 401:
        print("Error: code = 401 - Client ID or API key isn't active or invalid!")
    elif res.status_code == 402:
        print("Error:402 There are not enough funds on your account!")
    elif res.status_code == 403:
        print("Error: code = 403 - Account isn't activated. Please wait or contact to support!")
    elif res.status_code == 404:
        print("Error:404 Resource not found")
    elif res.status_code in (500, 502, 503, 504):
        print("System error! Please contact to LOX24 support!")
    else:
        print(f"Error: code {res.status_code}")
    print(json.dumps(res.json(), indent=4))

				
					package eu.lox24.doc.sms;

import org.json.JSONObject;

import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.time.Duration;

public class PostSmsCollection {

    public static void main(String[] args) {

        var key = "1234567:e3f3a759b6677959b6ebfcxxxxxxxxxx";
        var url = "https://api.lox24.eu/sms";

        var json = new JSONObject();
        json.put("sender_id", "My Sender");
        json.put("text", "Test message");
        json.put("service_code", "direct");
        json.put("phone", "+49751234567");
        json.put("delivery_at", 1573724611);
        json.put("is_unicode", true);
        json.put("callback_data", "123456");
        json.put("voice_lang", "DE");

        var postData = json.toString();

        System.out.println("Post data: " + postData);

        var httpRequest = HttpRequest.newBuilder(URI.create(url))
                .timeout(Duration.ofMillis(100000))
                .setHeader("Content-Type", "application/json; charset=utf-8")
                .setHeader("Accept", "application/json") // or application/ld+json
                .setHeader("X-LOX24-AUTH-TOKEN", key)
                .POST(HttpRequest.BodyPublishers.ofString(postData))
                .build();

        var client = HttpClient.newBuilder()
                .version(HttpClient.Version.HTTP_1_1) // Http 1.1 clients are kept alive be default
                .build();

        try {
            var httpResponse = client.send(httpRequest, HttpResponse.BodyHandlers.ofString());

            if (httpResponse.statusCode() == HttpURLConnection.HTTP_CREATED) {
                System.out.println("Success:" + httpResponse.statusCode() + " " + "sms resource created");
                System.out.println("Response text : \n" + httpResponse.body());

            } else {

                System.out.println("Error: wrong response code " + httpResponse.statusCode() + " on create sms");

                switch (httpResponse.statusCode()) {

                    case HttpURLConnection.HTTP_BAD_REQUEST: // 400
                        System.out.println("Error:400 Invalid input");
                        break;
                    case HttpURLConnection.HTTP_UNAUTHORIZED: // 401
                        System.out.println("Error:401 Client ID or API key isn't active or invalid!");
                        break;
                    case HttpURLConnection.HTTP_PAYMENT_REQUIRED: // 402
                        System.out.println("Error:402 There are not enough funds on your account!");
                        break;
                    case HttpURLConnection.HTTP_FORBIDDEN: // 403
                        System.out.println("Error:403 Account isn't activated. Please wait or contact to support!");
                        break;
                    case HttpURLConnection.HTTP_INTERNAL_ERROR: // 500
                    case HttpURLConnection.HTTP_BAD_GATEWAY: //502
                    case HttpURLConnection.HTTP_UNAVAILABLE: // 503
                    case HttpURLConnection.HTTP_GATEWAY_TIMEOUT: // 504
                        System.out.println("System error! Please contact to LOX24 support!");
                        break;
                }

            }

        } catch (IOException | InterruptedException e) {
            e.printStackTrace();
        }
    }
}

				
					/*
 * Post sms
 */
const token = "7b7c6063bab885ce79814b5ff1ee6885";

var postObj = {
    sender_id: 'My Sender',
    text: 'Test message',
    service_code: 'direct',
    phone: '+49751234567',
    delivery_at: 1573724611,
    is_unicode: true,
    callback_data: "123456",
    voice_lang: "DE"
};

var postdata = JSON.stringify(postObj);

const https = require('https');
const options = {
    hostname: 'api.lox24.eu',
    path: '/sms',
    method: 'POST',
    headers: {
        'Accept': 'application/json',
        'Content-Type': 'application/json',
        'Content-Length': postdata.length,
        'X-LOX24-AUTH-TOKEN': token
    }
}

const req = https.request(options, res => {
    if (res.statusCode == 201) {
        console.log("Success: code = 201 - sms resource created");
        res.on('data', d => { process.stdout.write(d) })
    }
    else if (res.statusCode == 400) console.log("Error: code = 400 - Invalid input");
    else if (res.statusCode == 401) console.log("Error: code = 401 - Client ID or API key isn't active or invalid!");
    else if (res.statusCode == 402) console.log("Error: code = 402 - There are not enough funds on your account!");
    else if (res.statusCode == 403) console.log("Error: code = 403 - Account isn't activated. Please wait or contact to support!");
})

req.on('error', error => {
    console.error(error)
})
req.write(postdata);
req.end();

SMS dialogs in both directions

Not only sending SMS, but also receiving SMS

You can also receive inbound SMS via our SMS interface. For a monthly basic fee of 29 euros, we will set up your own phone number. All incoming messages on this number can be delivered to you via HTTP request or mail.

Bulk SMS API

Our SMS gateway can not only process single SMS, but you can also transfer several thousand SMS to us at the same time with just one HTTP request. This saves resources and speeds up SMS sending. You can either transfer all recipients to us or work with existing distribution groups.

We have the answer to your questions!

Is the SMS Gateway GDPR compliant?

Yes, all applicable privacy policies are adhered to. Furthermore, the strict German secrecy of telecommunications applies to the content of your SMS.

Can we test it somehow?

Of course, you can sign up with us without any obligations and get 50 cents free trial credit for your first SMS.

Can SMS be sent worldwide?

Yes, we support just about every network in the world. The SMS price is usually even cheaper than to Germany.

Where are your servers located?

All our servers are located exclusively in Germany. We guarantee the security of your data.

Is there a minimum contract period?

No, you can cancel at any time without notice. But we are sure that you will be satisfied with us.

More products

SMS-MO: Inbound SMS

You can not only send SMS with us. Your customers can also reply to this SMS. You can receive the answers by email or simply view them in your inbox web interface. This allows customers to respond directly to your bulk SMS and, for example, confirm appointments, place orders or ask for a callback. Engage in a dialogue with your customers and take advantage of their low inhibition to send an SMS response.

Single SMS

You can send individual SMS via our website and also via the API. Of course, it is also possible to use templates, but basically the content and sender of the SMS is individual and is determined by you for each dispatch.

Personalized SMS

Do you have other data besides the number of your customers? For example, the name of your customer? You can have this data automatically inserted into the SMS text without any additional effort. Through these personalized individual bulk SMS, you achieve even greater attention and give customers the feeling of having been personally informed by you. Insert individual locations, customer numbers, dates or similar into the text. No matter what the data is, our system can insert you at the desired text location, suitable for the recipient.

Mail2SMS

Just send your SMS as a normal email. Our mail server translates the messages into an SMS and forwards them to your recipients as a text message.

Kannel SMPP

We support SMS sending via Kannel. To do this, we use a variant with built-in SSL support to address some of the drawbacks of Kannel.

Test SMS API now!

Integrate our SMS API into your application today. With 50 cents free credit you can test the SMS gateway without any obligations.