Firstly within the message($message) with html tags
$message = "<html><body><p><img src='http://www.yourwebsite.com/images/yourwebsite.com.gif'><br /><br />Hello Member,<br /><br />Have you Logged on yet to yourwebsite.com and got your Password ?<br /><br />You need to request you password by confirming your details<br /><br /> <a href='http://yourwebsite.com/newbie.php'>Request Password</a> an email will then be sent to your email address with your password<br /><br />Then follow the link <a href='https://yourwebsite.com/userlogin.php'> yourwebsite.com/userlogin</a> To logon<br /><br />Thank you,<br /><br />yourwebsite.com<br /><br /><br /><br />This is an automated email, please do not reply.</body></html>";
Then use correct headers content type text/html; charset=iso-8859-1
$message = nl2br($message);
$headers = "MIME-Version: 1.0\r\n";
$headers .= "Content-type: text/html; charset=iso-8859-1\r\n";
$headers .= "From: you@yourwebsite.com\r\n";
$headers .= "Return-path: you@yourwebsite.com>\r\n";
// Send
$rc = mail($email, $subject, $message, $headers);