Why are my links not showing up via php email function?

Question

I am trying to send notification emails(which is working fine) but have added the html headers to try to send links etc...for some reason nothing is showing up at all, just blank space where the desired links are supposed to be. Here is my code:

if(isset($_POST['commentBlogSubmit']) && $auth) {

    $query = "SELECT `Email` FROM `Users` WHERE `id` = '" . $prof->id . "'";
    $request = mysql_query($query,$connection) or die(mysql_error());
    $result = mysql_fetch_array($request); 

    $Email = $result['Email'];


    $to = $Email;
    $subject = "Someone sent you left you a comment";
    $message = "You have a new blog comment  <br />".
               " <a href='http:www.blah.org/indexNew.php'></a>";
    $from = "[email protected]";
    $headers  = 'MIME-Version: 1.0' . "\r\n";
    $headers .= 'Content-type: text/html; charset=iso-8859-1' . "\r\n";
    $headers .= "From: $from";
    mail($to, $subject, $message, $headers);

}

Answer 1

Perhaps because you have no text inside the link tag?

Answer 2

Because the PHP email function generally sends plain text.

Rather than trying to do this yourself, you should probably use Mail_Mime

Also, though your headers are probably correct, you have nothing between the <a> and </a> tags.