The HTML insert option is for forums like this where you demonstrate a lot of HTML code. It doesn't actually parse HTML.
You might be interested in this.
This add on creates a new bbcode called [raffle]
If you generate the code and it looks like this:
	
	
	
		HTML:
	
	
		<a id="rc-7a52bd0" class="rafl" href="http://www.rafflecopter.com">a Rafflecopter giveaway</a>
<script src="//d12vno17mo87cx.cloudfront.net/embed/rafl/cptr.js"></script>
	 
 
See where it says id="rc-7a52bd0"?
Well rc-7a52bd- is the unique code for your raffle.
So, to display that code and the raffle properly in a forum post, install my add-on and type in your forum post:
[raffle]rc-7a52bd0[/raffle]
Just replace "rc-7a52bd0" with whatever your id is in the code you generate on their website 
