Apologies for going offtopic, but FYI, SpamAsssassin is marking your registration emails and alerts as spam.

Here's the important positive scores:

1.775 URIBL_BLACK Contains an URL listed in the URIBL blacklist 1.105 MIME_HTML_ONLY Message only has text/html MIME parts 0.635 HTML_MIME_NO_HTML_TAG HTML-only message, but there is no HTML tag