SMS Quick Start

Last updated: 2022-05-12 Contributors Byrne ReeseNoneJohn WangPaco Vu
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Things to know before you begin

Welcome to the RingCentral Platform. RingCentral is the leading unified communications platform. From one system developers can integrate with, or build products around all the ways people communicate today: SMS, voice, fax, chat and meetings.

In this Quick Start, we are going to help you send your first SMS on the platform in just a few minutes. Let's get started.

Create App and Get Credentials

The first thing we need to do is create an app in the RingCentral Developer Portal. This can be done quickly by clicking the "Create SMS App" button below. Just click the button, enter a name and description if you choose, and click the "Create" button. If you do not yet have a RingCentral account, you will be prompted to create one.

Create SMS App

  1. Login or create an account if you have not done so already.
  2. Go to Console/Apps and click 'Create App' button.
  3. Select "REST API App" under "What type of app are you creating?" Click "Next."
  4. Under "Authentication" select "Password-based auth flow."
  5. Under "Security" add the following permissions:
    • SMS
    • ReadAccounts
  6. Under "Security" select "This app is private and will only be callable using credentials from the same RingCentral account."

When you are done, you will be taken to the app's dashboard. Make note of the Client ID and Client Secret. We will be using those momentarily.

Download and edit a .env file

Follow the instructions found in our guide to running Developer Guide code samples. Or:

  1. Download our env-template and save it as a file named .env.
  2. Edit your newly downloaded .env file, setting its variables with the proper values for the app you created above..

Send an SMS

Select your preferred language below.

Install RingCentral JavaScript SDK

$ npm install @ringcentral/sdk dotenv --save

Create and edit sms.js

Create a file called sms.js. Be sure the values in your .env file have been set properly, including the SMS_RECIPIENT variable.

const RC = require('@ringcentral/sdk').SDK

const RECIPIENT    = process.env.SMS_RECIPIENT

var rcsdk = new RC({
    'server':       process.env.RC_SERVER_URL,
    'clientId':     process.env.RC_CLIENT_ID,
    'clientSecret': process.env.RC_CLIENT_SECRET
var platform = rcsdk.platform();
    'username':  process.env.RC_USERNAME,
    'password':  process.env.RC_PASSWORD,
    'extension': process.env.RC_EXTENSION

platform.on(, function(e){

async function read_extension_phone_number(){
    try {
        var resp = await platform.get("/restapi/v1.0/account/~/extension/~/phone-number")
        var jsonObj = await resp.json()
        for (var record of jsonObj.records){
            for (feature of record.features){
                if (feature == "SmsSender"){
                    return send_sms(record.phoneNumber)
    } catch(e) {

async function send_sms(fromNumber){
    try {
        var resp = await'/restapi/v1.0/account/~/extension/~/sms', {
            from: {'phoneNumber': fromNumber},
            to: [{'phoneNumber': RECIPIENT}],
            text: 'Hello World from JavaScript'
        var jsonObj = await resp.json()
        console.log("SMS sent. Message status: " + jsonObj.messageStatus)
    } catch(e) {

Run your code

You are almost done. Now run your script.

$ node sms.js

Install RingCentral Python SDK

$ pip install ringcentral python-dotenv

Create and edit

Create a file called Be sure the values in your .env file have been set properly, including the SMS_RECIPIENT variable.

#!/usr/bin/env python
from ringcentral import SDK
import os,sys
from dotenv import load_dotenv

RECIPIENT    = os.environ.get('SMS_RECIPIENT')

rcsdk = SDK( os.environ.get('RC_CLIENT_ID'),
             os.environ.get('RC_SERVER_URL') )
platform = rcsdk.platform()

                 os.environ.get('RC_PASSWORD') )
  sys.exit("Unable to authenticate to platform. Check credentials.")

def read_extension_phone_number():
    resp = platform.get("/restapi/v1.0/account/~/extension/~/phone-number")
    jsonObj = resp.json()
  except e:
    sys.exit("Unable to fetch SMS-enabled phone numbers")
  for record in jsonObj.records:
    for feature in record.features:
      if feature == "SmsSender":
        return send_sms(record.phoneNumber)
  sys.exit("No SMS-enabled phone number found")

def send_sms(fromNumber):
    resp ='/restapi/v1.0/account/~/extension/~/sms',
                  'from' : { 'phoneNumber': fromNumber },
                  'to'   : [ {'phoneNumber': RECIPIENT} ],
                  'text' : 'Hello World from Python'
    jsonObj = resp.json()
    sys.exit("Unable to send SMS")
  print (jsonObj.messageStatus)


Run your code

You are almost done. Now run your script.

$ python

Install RingCentral PHP SDK

$ curl -sS | php
$ php composer.phar require ringcentral/ringcentral-php vlucas/phpdotenv

Create and edit sms.php

Create a file called sms.php. Be sure the values in your .env file have been set properly, including the SMS_RECIPIENT variable.

$dotenv = Dotenv\Dotenv::createImmutable(__DIR__ . '/../');


$rcsdk = new RingCentral\SDK\SDK( $_ENV['RC_CLIENT_ID'],
                                  $_ENV['RC_SERVER_URL'] );
$platform = $rcsdk->platform();
$platform->login( $_ENV['RC_USERNAME'],
                  $_ENV['RC_PASSWORD'] );


function read_extension_phone_number(){
  global $platform;
  $resp = $platform->get("/restapi/v1.0/account/~/extension/~/phone-number");
  $jsonObj = $resp->json();
  foreach ($resp->json()->records as $record){
    foreach ($record->features as $feature){
      if ($feature == "SmsSender"){
        return send_sms($record->phoneNumber);
    exit("No phone number found with 'SmsSender' feature enabled.");
function send_sms($fromNumber){
  global $platform,$RECIPIENT;
  try {
    $resp = $platform->post('/account/~/extension/~/sms',
           'from' => array ('phoneNumber' => $fromNumber),
           'to' => array(
                    array('phoneNumber' => $RECIPIENT)
           'text' => 'Hello World from PHP'
    print("SMS sent. Message status: " . $resp->json()->messageStatus . PHP_EOL);
  } catch (\RingCentral\SDK\Http\ApiException $e) {
    exit("Message: " . $e->message . PHP_EOL);

Run your code

You are almost done. Now run your script.

$ php sms.php

Create a Visual Studio project

  • Choose Console Application .Net Core -> App
  • Select Target Framework .NET Core 2.1
  • Enter project name "Send_SMS"
  • Add NuGet package RingCentral.Net (4.1.0) SDK

Edit the file Program.cs

Be sure to edit the variables in ALL CAPS with your app and user credentials. Be sure to also set the recipient's phone number.

using System;
using System.Threading.Tasks;
using RingCentral;

namespace Send_SMS
    class Program
        const string SMS_RECIPIENT = "<ENTER PHONE NUMBER>";
        static RestClient restClient;
        static void Main(string[] args)
            restClient = new RestClient(
        static private async Task read_extension_phone_number()
            var resp = await restClient.Restapi().Account().Extension().PhoneNumber().Get();
            foreach (var record in resp.records)
                foreach(var feature in record.features)
                    if (feature == "SmsSender")
                        goto LoopEnd;

        static private async Task send_sms(string fromNumber)
            var parameters = new CreateSMSMessage();
            parameters.from = new MessageStoreCallerInfoRequest {
                phoneNumber = fromNumber
   = new MessageStoreCallerInfoRequest[] { new MessageStoreCallerInfoRequest {
                    phoneNumber = Environment.GetEnvironmentVariable("SMS_RECIPIENT")
                } };
            parameters.text = "Hello World from C#";

            var resp = await restClient.Restapi().Account().Extension().Sms().Post(parameters);
            Console.WriteLine("SMS sent. Message status: " + resp.messageStatus);

Run Your App

You are almost done. Now run your app from Visual Studio.

Create a Java project (using Eclipse IDE)

  • Create a new Java project
  • Select the Gradle Project wizard
  • Enter project name "Send_SMS"
  • Open the build.gradle file and add the RingCentral Java SDK to the project as shown below:

    dependencies {
        // ...
        compile 'com.ringcentral:ringcentral:1.4.0'
  • Right-click the project in the Package Explorer and choose "Refresh Gradle Project" under the "Gradle" sub-menu

Create a new Java Class

Select "File -> New -> Class" to create a new Java class named "Send_SMS"

package SendSMSQuickStart;

public class SendSMSQuickStart {

  public static void main(String[] args) {
    // TODO Auto-generated method stub


Edit the file "".

Be sure to edit the variables in ALL CAPS with your app and user credentials. Be sure to also set the recipient's phone number.

package com.ringcentral;

import com.ringcentral.*;
import com.ringcentral.definitions.*;

public class SendSMSQuickStart {
    static String SMS_RECIPIENT = System.getenv("SMS_RECIPIENT");
    static RestClient rc;

    public static void main(String[] args) {
        var obj = new SendSMSQuickStart();
    rc = new RestClient( System.getenv("RC_CLIENT_ID"),
                 System.getenv("RC_SERVER_URL") );
    try {
        rc.authorize( System.getenv("RC_USERNAME"),
              System.getenv("RC_PASSWORD") );
    } catch (RestException | IOException e) {

    public void read_extension_phone_number() throws RestException, IOException{
    var resp =  rc.restapi().account().extension().phoneNumber().get();
    OUTERMOST: for (var record : resp.records) {
        for(var feature : record.features) {
        if (feature.equalsIgnoreCase("SmsSender")) {
            break OUTERMOST;

    public void send_sms(String phoneNumber) throws RestException, IOException {
        CreateSMSMessage postParameters = new CreateSMSMessage();
        postParameters.from = new MessageStoreCallerInfoRequest().phoneNumber(phoneNumber); = new MessageStoreCallerInfoRequest[]{
        new MessageStoreCallerInfoRequest().phoneNumber(SMS_RECIPIENT)
        postParameters.text = "Hello World from Java";

        var response = rc.restapi().account().extension().sms().post(postParameters);
        System.out.println("SMS sent. Message status: " + response.messageStatus);

Run Your App

You are almost done. Now run your app from Eclipse.

Install RingCentral Ruby SDK

$ gem install ringcentral-sdk dotenv

Create and edit sms.rb

Create a file called sms.rb. Be sure the values in your .env file have been set properly, including the SMS_RECIPIENT variable.

require 'ringcentral'
require 'dotenv/load'


$rc = ENV['RC_CLIENT_ID'],
                       ENV['RC_SERVER_URL'] )

$rc.authorize( username: ENV['RC_USERNAME'],
               extension: ENV['RC_EXTENSION'],
               password: ENV['RC_PASSWORD'] )

def read_extension_phone_number()
  resp = $rc.get('/restapi/v1.0/account/~/extension/~/phone-number')
  for record in resp.body['records'] do
    for feature in record['features'] do
      if feature == "SmsSender"
        return send_sms(record['phoneNumber'])

def send_sms(phoneNumber)
  resp = $'/restapi/v1.0/account/~/extension/~/sms', payload: {
        from: {phoneNumber: phoneNumber},
        to: [{phoneNumber: RECIPIENT}],
        text: 'Hello World from Ruby'

  puts "SMS sent. Message status: " + resp.body['messageStatus']


Run your code

You are almost done. Now run your script.

$ ruby sms.rb

Need Help?

Having difficulty? Feeling frustrated? Receiving an error you don't understand? Our community is here to help and may already have found an answer. Search our community forums, and if you don't find an answer please ask!

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What's Next?

When you have successfully made your first API call, it is time to take your next step towards building a more robust RingCentral application.

Take your next step »