> ## Documentation Index > Fetch the complete documentation index at: https://plivo.com/docs/llms.txt > Use this file to discover all available pages before exploring further. # SMS Bulk Messaging > Send bulk SMS messages — PHLO workflow and API implementation guide ## Overview This guides shows how to send an SMS text message to multiple phone numbers. You can use this technique to tell customers about new offerings or send out customer surveys, among other use cases. You can send bulk SMS messages either by using our PHLO visual workflow builder or our APIs. Follow the instructions in one of the tabs below. You can create and deploy a PHLO to send bulk SMS text messages with a few clicks on the PHLO canvas and trigger it with a few lines of code. ## How it works

Here’s how to use Plivo APIs to send bulk marketing SMS text messages. ## How it works

## Prerequisites To get started, you need a Plivo account — [sign up](https://cx.plivo.com/signup) with your work email address if you don’t have one already. If this is your first time using Plivo APIs, follow our instructions to [set up a Node.js development environment](http://localhost:30000/docs/sdk/server/set-up-node-dev-environment-api-messaging/). ## Create the send SMS application Create a file called `send_sms.js` and paste into it this code. ```javascript theme={null} var plivo = require('plivo'); (function main() { 'use strict'; var client = new plivo.Client("", ""); client.messages.create( { src: "", dst: "", text: "Flash sale — half price on all products — offer expires at midnight. Use code 50OFF at checkout" }, ).then(function (response) { console.log(response); }); })(); ``` Replace the auth placeholders with your authentication credentials from the [Plivo console](https://cx.plivo.com/home). Replace the phone number placeholders with actual phone numbers in [E.164 format](https://en.wikipedia.org/wiki/E.164) (for example, +12025551234). In countries other than the US and Canada you can use a [sender ID](/messaging/concepts/sender-id-usage/) for the message source. You must have a Plivo phone number to send messages to the US or Canada; you can buy a Plivo number from Phone Numbers > [Buy Numbers](https://cx.plivo.com/home) on the Plivo console or via the [Numbers API](/numbers/api/phone-number/#buy-a-phone-number). We recommend that you store your credentials in the `auth_id` and `auth_token` environment variables to avoid the possibility of accidentally committing them to source control. If you do this, you can initialize the client with no arguments and Plivo will automatically fetch the values from the environment variables. You can use `process.env` to store environment variables and fetch them when initializing the client. ## Test Save the file and run it. ```shell theme={null} node send_sms.js ``` ## Overview This guides shows how to send an SMS text message to multiple phone numbers. You can use this technique to tell customers about new offerings or send out customer surveys, among other use cases. You can send bulk SMS messages either by using our PHLO visual workflow builder or our APIs. Follow the instructions in one of the tabs below. You can create and deploy a PHLO to send bulk SMS text messages with a few clicks on the PHLO canvas and trigger it with a few lines of code. ## How it works

Here’s how to use Plivo APIs to send bulk marketing SMS text messages. ## How it works

## Prerequisites To get started, you need a Plivo account — [sign up](https://cx.plivo.com/signup) with your work email address if you don’t have one already. If this is your first time using Plivo APIs, follow our instructions to [set up a Ruby development environment](/sdk/server/set-up-ruby-dev-environment-api-messaging/). ## Create the send SMS application Create a file called `send_sms.rb` and paste into it this code. ```ruby theme={null} require "plivo" include Plivo api = RestClient.new("","") response = api.messages.create( src:"", dst:"" text:"Flash sale — half price on all products — offer expires at midnight. Use code 50OFF at checkout", ) puts response ``` Replace the auth placeholders with your authentication credentials from the [Plivo console](https://cx.plivo.com/home). Replace the phone number placeholders with actual phone numbers in [E.164 format](https://en.wikipedia.org/wiki/E.164) (for example, +12025551234). In countries other than the US and Canada you can use a [sender ID](/messaging/concepts/sender-id-usage/) for the message source. You must have a Plivo phone number to send messages to the US or Canada; you can buy a Plivo number from Phone Numbers > [Buy Numbers](https://cx.plivo.com/home) on the Plivo console or via the [Numbers API](/numbers/api/phone-number/#buy-a-phone-number). We recommend that you store your credentials in the `auth_id` and `auth_token` environment variables to avoid the possibility of accidentally committing them to source control. If you do this, you can initialize the client with no arguments and Plivo will automatically fetch the values from the environment variables. You can use `process.env` to store environment variables and fetch them when initializing the client. ## Test Save the file and run it. ```shell theme={null} ruby send_sms.rb ``` ## Overview This guides shows how to send an SMS text message to multiple phone numbers. You can use this technique to tell customers about new offerings or send out customer surveys, among other use cases. You can send bulk SMS messages either by using our PHLO visual workflow builder or our APIs. Follow the instructions in one of the tabs below. You can create and deploy a PHLO to send bulk SMS text messages with a few clicks on the PHLO canvas and trigger it with a few lines of code. ## How it works

Here’s how to use Plivo APIs to send bulk marketing SMS text messages. ## How it works

## Prerequisites To get started, you need a Plivo account — [sign up](https://cx.plivo.com/signup) with your work email address if you don’t have one already. If this is your first time using Plivo APIs, follow our instructions to [set up a Python development environment](/sdk/server/set-up-python-dev-environment-api-messaging/). ## Create the send SMS application Create a file called `send_sms.py` and paste into it this code. ```python theme={null} import plivo client = plivo.RestClient('','') response = client.messages.create( src='', dst='', text='Flash sale — half price on all products — offer expires at midnight. Use code 50OFF at checkout',) print(response) ``` Replace the auth placeholders with your authentication credentials from the [Plivo console](https://cx.plivo.com/home). Replace the phone number placeholders with actual phone numbers in [E.164 format](https://en.wikipedia.org/wiki/E.164) (for example, +12025551234). In countries other than the US and Canada you can use a [sender ID](/messaging/concepts/sender-id-usage/) for the message source. You must have a Plivo phone number to send messages to the US or Canada; you can buy a Plivo number from Phone Numbers > [Buy Numbers](https://cx.plivo.com/home) on the Plivo console or via the [Numbers API](/numbers/api/phone-number/#buy-a-phone-number). We recommend that you store your credentials in the `auth_id` and `auth_token` environment variables to avoid the possibility of accidentally committing them to source control. If you do this, you can initialize the client with no arguments and Plivo will automatically fetch the values from the environment variables. You can use `process.env` to store environment variables and fetch them when initializing the client. ## Test Save the file and run it. ```shell theme={null} python send_sms.py ``` ## Overview This guides shows how to send an SMS text message to multiple phone numbers. You can use this technique to tell customers about new offerings or send out customer surveys, among other use cases. You can send bulk SMS messages either by using our PHLO visual workflow builder or our APIs. Follow the instructions in one of the tabs below. You can create and deploy a PHLO to send bulk SMS text messages with a few clicks on the PHLO canvas and trigger it with a few lines of code. ## How it works

Here’s how to use Plivo APIs to send bulk marketing SMS text messages. ## How it works

## Prerequisites To get started, you need a Plivo account — [sign up](https://cx.plivo.com/signup) with your work email address if you don’t have one already. If this is your first time using Plivo APIs, follow our instructions to [set up a PHP development environment](/sdk/server/set-up-php-dev-environment-api-messaging/). ## Create the send SMS application Create a file called `SendSMS.php` and paste into it this code. ```php theme={null} ",""); $response = $client->messages->create( [ "src" => "", "dst" => "", "text" => "Flash sale — half price on all products — offer expires at midnight. Use code 50OFF at checkout", ] ); print_r($response); ?> ``` Replace the auth placeholders with your authentication credentials from the [Plivo console](https://cx.plivo.com/home). Replace the phone number placeholders with actual phone numbers in [E.164 format](https://en.wikipedia.org/wiki/E.164) (for example, +12025551234). In countries other than the US and Canada you can use a [sender ID](/messaging/concepts/sender-id-usage/) for the message source. You must have a Plivo phone number to send messages to the US or Canada; you can buy a Plivo number from Phone Numbers > [Buy Numbers](https://cx.plivo.com/home) on the Plivo console or via the [Numbers API](/numbers/api/phone-number/#buy-a-phone-number). We recommend that you store your credentials in the `auth_id` and `auth_token` environment variables to avoid the possibility of accidentally committing them to source control. If you do this, you can initialize the client with no arguments and Plivo will automatically fetch the values from the environment variables. You can use `process.env` to store environment variables and fetch them when initializing the client. ## Test Save the file and run it. ```shell theme={null} php SendSMS.php ``` ## Overview This guides shows how to send an SMS text message to multiple phone numbers. You can use this technique to tell customers about new offerings or send out customer surveys, among other use cases. You can send bulk SMS messages either by using our PHLO visual workflow builder or our APIs. Follow the instructions in one of the tabs below. You can create and deploy a PHLO to send bulk SMS text messages with a few clicks on the PHLO canvas and trigger it with a few lines of code. ## How it works

Here’s how to use Plivo APIs to send bulk marketing SMS text messages. ## How it works

## Prerequisites To get started, you need a Plivo account — [sign up](https://cx.plivo.com/signup) with your work email address if you don’t have one already. If this is your first time using Plivo APIs, follow our instructions to [set up a .NET development environment](/sdk/server/set-up-dotnet-dev-environment-api-messaging/). ## Create the send SMS application In Visual Studio, in the CS project, open the file `Program.cs` and paste into it this code. ```csharp theme={null} ",""); var response = api.Message.Create( src: "", dst: "", text: "Flash sale — half price on all products — offer expires at midnight. Use code 50OFF at checkout" ); Console.WriteLine(response); } } } ``` Replace the auth placeholders with your authentication credentials from the [Plivo console](https://cx.plivo.com/home). Replace the phone number placeholders with actual phone numbers in [E.164 format](https://en.wikipedia.org/wiki/E.164) (for example, +12025551234). In countries other than the US and Canada you can use a [sender ID](/messaging/concepts/sender-id-usage/) for the message source. You must have a Plivo phone number to send messages to the US or Canada; you can buy a Plivo number from Phone Numbers > [Buy Numbers](https://cx.plivo.com/home) on the Plivo console or via the [Numbers API](/numbers/api/phone-number/#buy-a-phone-number). We recommend that you store your credentials in the `auth_id` and `auth_token` environment variables to avoid the possibility of accidentally committing them to source control. If you do this, you can initialize the client with no arguments and Plivo will automatically fetch the values from the environment variables. You can use `process.env` to store environment variables and fetch them when initializing the client. ## Test Save the file and run it. ## Overview This guides shows how to send an SMS text message to multiple phone numbers. You can use this technique to tell customers about new offerings or send out customer surveys, among other use cases. You can send bulk SMS messages either by using our PHLO visual workflow builder or our APIs. Follow the instructions in one of the tabs below. You can create and deploy a PHLO to send bulk SMS text messages with a few clicks on the PHLO canvas and trigger it with a few lines of code. ## How it works

Here’s how to use Plivo APIs to send bulk marketing SMS text messages. ## How it works

## Prerequisites To get started, you need a Plivo account — [sign up](https://cx.plivo.com/signup) with your work email address if you don’t have one already. If this is your first time using Plivo APIs, follow our instructions to [set up a Java development environment](/sdk/server/set-up-java-dev-environment-api-messaging/). ## Create the send SMS application Create a Java class called `SendSMS` and paste into it this code. ```java theme={null} import java.io.IOException; import java.net.URL; import java.util.Collections; import com.plivo.api.Plivo; import com.plivo.api.exceptions.PlivoRestException; import com.plivo.api.models.message.Message; import com.plivo.api.models.message.MessageCreateResponse; class SendSMS { public static void main(String [] args) { Plivo.init("",""); MessageCreateResponse response = Message.creator("","", "Flash sale — half price on all products — offer expires at midnight. Use code 50OFF at checkout") .create(); System.out.println(response); } } ``` Replace the auth placeholders with your authentication credentials from the [Plivo console](https://cx.plivo.com/home). Replace the phone number placeholders with actual phone numbers in [E.164 format](https://en.wikipedia.org/wiki/E.164) (for example, +12025551234). In countries other than the US and Canada you can use a [sender ID](/messaging/concepts/sender-id-usage/) for the message source. You must have a Plivo phone number to send messages to the US or Canada; you can buy a Plivo number from Phone Numbers > [Buy Numbers](https://cx.plivo.com/home) on the Plivo console or via the [Numbers API](/numbers/api/phone-number/#buy-a-phone-number). We recommend that you store your credentials in the `auth_id` and `auth_token` environment variables to avoid the possibility of accidentally committing them to source control. If you do this, you can initialize the client with no arguments and Plivo will automatically fetch the values from the environment variables. You can use `process.env` to store environment variables and fetch them when initializing the client. ## Test Save the file and run it. ## Overview This guides shows how to send an SMS text message to multiple phone numbers. You can use this technique to tell customers about new offerings or send out customer surveys, among other use cases. You can send bulk SMS messages either by using our PHLO visual workflow builder or our APIs. Follow the instructions in one of the tabs below. You can create and deploy a PHLO to send bulk SMS text messages with a few clicks on the PHLO canvas and trigger it with a few lines of code. ## How it works

Here’s how to use Plivo APIs to send bulk marketing SMS text messages. ## How it works

## Prerequisites To get started, you need a Plivo account — [sign up](https://cx.plivo.com/signup) with your work email address if you don’t have one already. To receive incoming messages, you must have a Plivo phone number that supports SMS; you can rent numbers from the [Numbers](https://cx.plivo.com/phone-numbers) page of the Plivo console or by using the [Numbers API](/numbers/). If this is your first time using Plivo APIs, follow our instructions to [set up a Go development environment](/sdk/server/set-up-go-dev-environment-api-messaging/). ## Create the send SMS application Create a file called `SendSMS.go` and paste into it this code. ```go theme={null} package main import "fmt" import "github.com/plivo/plivo-go/v7" func main() { client, err := plivo.NewClient("","", &plivo.ClientOptions{}) if err != nil { fmt.Print("Error", err.Error()) return } response, err := client.Messages.Create( plivo.MessageCreateParams{ Src: "", Dst: "", Text: "Flash sale — half price on all products — offer expires at midnight. Use code 50OFF at checkout", }, ) if err != nil { fmt.Print("Error", err.Error()) return } fmt.Printf("Response: %#v\n", response) } ``` Replace the auth placeholders with your authentication credentials from the [Plivo console](https://cx.plivo.com/home). Replace the phone number placeholders with actual phone numbers in [E.164 format](https://en.wikipedia.org/wiki/E.164) (for example, +12025551234). In countries other than the US and Canada you can use a [sender ID](/messaging/concepts/sender-id-usage/) for the message source. You must have a Plivo phone number to send messages to the US or Canada; you can buy a Plivo number from Phone Numbers > [Buy Numbers](https://cx.plivo.com/home) on the Plivo console or via the [Numbers API](/numbers/api/phone-number/#buy-a-phone-number). We recommend that you store your credentials in the `auth_id` and `auth_token` environment variables to avoid the possibility of accidentally committing them to source control. If you do this, you can initialize the client with no arguments and Plivo will automatically fetch the values from the environment variables. You can use `process.env` to store environment variables and fetch them when initializing the client. ## Test Save the file and run it. ```shell theme={null} go run SendSMS.go ```