Untitled

<?php
if(isset($_POST['submit'])){
    $to = "email@example.com"; // this is your Email address
    $from = $_POST['email']; // this is the sender's Email address
    $first_name = $_POST['first_name'];
    $last_name = $_POST['last_name'];
    $subject = "Form submission";
    $message = $first_name . " " . $last_name . " wrote the following:" . "\n\n" . $_POST['message'];

    $headers = "From:" . $from;

    mail($to,$subject,$message,$headers);

    echo "Mail Sent. Thank you " . $first_name . ", we will contact you shortly.";

    }
?>
<html>
<head>
</head>
<body>
<form action="" method="post">
First Name: <input type="text" name="first_name"><br>
Last Name: <input type="text" name="last_name"><br>
Email: <input type="text" name="email"><br>
Message:<br><textarea rows="5" name="message" cols="30"></textarea><br>
<input type="submit" name="submit" value="Submit">
</form>
</form>
</body>
</html>