PHP - send email not working

I have a page that send users their password but nobody recieves the emails.

Can somebody tell me why please, because I can't see anything wrong

$subject = "Password Retrieval - $username"; 
$message = "
    Dear $username, 

    Your password is $password
  
     
    Enjoy

    Admins

     
    This is an automated response, please do not reply!"; 
     
if (mail($email, $subject, $message, "From:admin@mywebsite.com")){
die("<b>An email has been sent with your password!<br>Make sure you check your Junk Folder!</b>"); 

}

PHP:

Thanks

 

  
      <?php
    require_once "Mail.php";
    $name=$_POST['name'];
    $address= $_POST['address'];
    $email=$_POST['email'];
	$from = $name;
    $to = "write email id where you want to send";
    $sub=$_POST[sub];
    $msg =$name."\n".$_POST['msg']."\n";

    $host = "localhost";
    $username = "your company mail id";
    $password = "password";

    $headers = array ('From' => $from,
      'To' => $to,
      'Subject' => $subject);
    $smtp = Mail::factory('smtp',
      array ('host' => $host,
        'auth' => true,
        'username' => $username,
        'password' => $password));

    $mail = $smtp->send($to, $headers, $body);

    if (PEAR::isError($mail)) {
      echo("<p>" . $mail->getMessage() . "</p>");
     } else {
      echo("<p>Message successfully sent!!</p>");
     }
    ?>

Code (markup):

Use the above code i u r sending mail to yahoo,gmail etc and use mail() for mailing to your server email id

 

Maybe mail() function in your server disabled. U should be using PHPMailer which good library for send mail function.

 

Whatever "Mail.php" is, he doesn't have it. Anyway, the only thing I see that could be wrong is that you don't define the $email variable anywhere.