Yes I thought that at first as well but the $WAGLOBAL_Root_URL places the URL of your site in front of all the rest. This is set in the Globals file and should follow the style of yourdomain.com/
It's this line
$WAGLOBAL_Root_URL = ((isset($_SERVER['SERVER_PROTOCOL']) && strpos($_SERVER['SERVER_PROTOCOL'], 'HTTPS') !== false) ? 'https://' : 'http://') . $_SERVER['SERVER_NAME'] . $WAGLOBAL_localRoot;
I assume that it's filled in during set up. I only purchaced PowerStore last night and haven't actually used it yet but I assume that's it. Just check that line and make sure that it has your domain in there. If it has then i revert back to my original post and blame the end users email client / host.