One error:
link: <a href="http://XXX>YYY</a>
should be
<a href="http://XXX">YYY</a>
You were missing a closing ".
Another error:
PM message on href="http://www.FORUM ADDRESS HERE"><b>FORUM NAME HERE</b></a>
You are missing the opening <a tag
<a href="http://www.forumaddresshere"><b>forum name here</b></a> is how it should be
I can't see anything wrong with the email link, but as you have unclosed links earlier in the document, the browser might think the whole document is one giant link. Try fixing the previous errors first, and seeing if the mailto then works.
I will comment that using a mailto link is asking for spam. It will be harvested by spambots. I hope you have good serverside spam filters.