Free SMS API India | Free SMS Gateway API

using System;
using System.IO;
using System.Net;
using System.Text;

class SMSIndiaHubSender
{
    static void Main()
    {
        string user = "YOUR_USERNAME";
        string password = "YOUR_PASSWORD";
        string mobile = "9198XXXXXXXX";
        string senderId = "WEBSMS";
        string message = Uri.EscapeDataString("Hi, Thanks for signing up with SMSINDIAHUB.");
        
        string url = $"http://cloud.smsindiahub.in/vendorsms/pushsms.aspx?user={user}&password={password}&msisdn={mobile}&sid={senderId}&msg={message}&fl=0&gwid=2";
        
        HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
        request.Method = "GET";
        
        using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
        using (StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8))
        {
            string result = reader.ReadToEnd();
            Console.WriteLine(result);
        }
    }
}

Imports System.IO
Imports System.Net

Public Class SMSBroadcast
    Public Sub SendSMS()
        Dim sURL As String = "http://cloud.smsindiahub.in/vendorsms/pushsms.aspx?user=YourUser&password=YourPass&msisdn=9198XXXXXXXX&sid=WEBSMS&msg=Test%20SMS&fl=0&gwid=2"
        Dim request As WebRequest = WebRequest.Create(sURL)
        Using response As WebResponse = request.GetResponse()
            Using stream As Stream = response.GetResponseStream()
                Using reader As New StreamReader(stream)
                    Dim result As String = reader.ReadToEnd()
                    Console.WriteLine(result)
                End Using
            End Using
        End Using
    End Sub
End Class

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;

public class SMSIndiaHubClient {
    public static void main(String[] args) {
        try {
            String user = "username";
            String password = "password";
            String msisdn = "9198XXXXXXXX";
            String sid = "WEBSMS";
            String msg = URLEncoder.encode("Your verification OTP is: 123456", "UTF-8");

            String endpoint = "http://cloud.smsindiahub.in/vendorsms/pushsms.aspx?user=" + user 
                + "&password=" + password + "&msisdn=" + msisdn + "&sid=" + sid + "&msg=" + msg + "&fl=0&gwid=2";

            URL url = new URL(endpoint);
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            conn.setRequestMethod("GET");

            BufferedReader rd = new BufferedReader(new InputStreamReader(conn.getInputStream()));
            StringBuilder response = new StringBuilder();
            String line;
            while ((line = rd.readLine()) != null) {
                response.append(line);
            }
            rd.close();
            System.out.println("Response: " + response.toString());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

<%
Dim sUser, sPassword, sNumber, sMessage, sSenderID, sURL, objXmlHttpMain
sUser = "username"
sPassword = "password"
sNumber = "9198XXXXXXXX"
sMessage = "Test SMS from SMS INDIA HUB"
sSenderID = "WEBSMS"

sURL = "http://cloud.smsindiahub.in/vendorsms/pushsms.aspx?user=" & sUser & "&password=" & sPassword & "&msisdn=" & sNumber & "&sid=" & sSenderID & "&msg=" & Server.URLEncode(sMessage) & "&fl=0&gwid=2"

Set objXmlHttpMain = Server.CreateObject("Msxml2.ServerXMLHTTP")
objXmlHttpMain.open "GET", sURL, False
objXmlHttpMain.send
Response.Write(objXmlHttpMain.responseText)
Set objXmlHttpMain = Nothing
%>