sending_email.php

<?php
if(isset($_POST['submit'])){
        extract($_POST);
    // Admin email configuration
    $to_email = 'robvimu1130@gmail.com';

    $mail_subject = "PHP Contact Form Test";
    $mail_content = "
        <h3>Contact Details</h3>
        <p><b>Name: </b>".$fullname."</p>
        <p><b>Email: </b>".$email."</p>
        <p><b>Subject: </b>".$subject."</p>
        <p><b>Message: </b>".$message."</p>
    ";

    // Always set content-type when sending HTML email
    $headers = "MIME-Version: 1.0" . "\r\n";
    $headers .= "Content-type:text/html;charset=UTF-8" . "\r\n";

    // More headers
    $headers .= "From: " . $fullname . "<". $email .">\r\n";

    // Send email
    mail($to_email,$mail_subject,$mail_content,$headers);
    }
?>