I am trying to add the following line to the bottom of all email templates. As soon as I save the template the first part (http://newaussie.com.au/) gets deleted, and only the rest (index.php/your-subscriptions) is saved. Please, advise. I tried using JCE Editor and Tiny MCE editor. 

<p>You can unsubscribe by visiting <a href="http://newaussie.com.au/index.php/your-subscriptions">Your Subscriptions</a> page.</p>

By the way, it would be great if you can create a variable for this, i.e. [SITE_URL].