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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.

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Overview

This guide shows how to send an SMS notification or alert to any phone number. You can send SMS notifications and alerts either by using our PHLO visual workflow builder or our APIs. Follow the instructions in one of the tabs below.
Here’s how to use Plivo APIs to send SMS notifications.

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Prerequisites

To get started, you need a Plivo account — sign up with your work email address if you don’t have one already. To send messages to the United States and Canada, you must have a Plivo phone number that supports SMS; you can rent numbers from the Numbers page of the Plivo console or by using the Numbers API. If this is your first time using Plivo APIs, follow our instructions to set up a .NET development environment.

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Create the send SMS application

In Visual Studio, in the CS project, open the file Program.cs and paste into it this code.
using System;
using System.Collections.Generic;
using Plivo;

namespace PlivoExamples
{
    internal class Program
    {
        public static void Main(string[] args)
        {
            var api = new PlivoApi("<auth_id>","<auth_token>");
            var response = api.Message.Create(
                src: "<sender_id>",
                dst: "<destination_number>",
                text: "Appointment reminder: 12:00 noon tomorrow. Please reply to this message if you need to make a change"
                );
            Console.WriteLine(response);
        }
    }
}
Replace the auth placeholders with your authentication credentials from the Plivo console. Replace the phone number placeholders with actual phone numbers in E.164 format (for example, +12025551234). In countries other than the US and Canada you can use a sender ID 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 on the Plivo console or via the Numbers API.
Note: 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 the Environment.SetEnvironmentVariable method to store environment variables and Environment.GetEnvironmentVariable to fetch them when initializing the client.

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Test

Save the file and run it. Your application triggers an outbound SMS API request, and Plivo delivers your message to the destination number you specified.