Convert PHP Code to C#

<?php

$to = $_GET["to"]; //The receiving mobile number
$from = $_GET["from"]; //The sending mobile number
$message = urldecode($_GET["message"]); //SMS content


// You may wish to log this information in a database

// Lets send an email with the message data
$email_message = "Inbound SMS sent to $to.\nSent From: $from\nMessage: $message";
mail("email@example.com", "Inbound SMS", $message, "From: email@example.com");