title: While sending mail a href link is not clickable in wordpress?
body: <p>In the below code when I send the mail href link display whole url and not clickable it is shown as below:-
  Click on the following link :
  <a href="http://abc.com/xyz/test.php?user_id=dTM=&amp;key=bUl2MDJdfMN2w1cUNZ" rel="nofollow">click here for confirmation</a>
  This display correctly on local but on server it is incorrect.
  Please reply if not getting my point.</p>
  
  <pre><code>$key = stripslashes($user-&gt;user_activation_key);
  
  $activation_key = base64_encode($key);
  $user_id_enc = base64_encode($user_id);
  
  
  $siteUrl = get_site_url();
  $full_Url=$siteUrl.'/test.php?user_id='.$user_id_enc.'&amp;key='.$activation_key;
  $message  = __('Click on the following link:') . "&lt;/br&gt;\r\n";
  $message .= sprintf(__('&lt;a href="%s"&gt;click here for confirmation&lt;/a&gt;'), $full_Url) . "\r\n";
    wp_mail($user_email, sprintf(__('[%s] Your confirmatiom'), $blogname), $message);
  </code></pre>