Looking for an Email Deliverability Tool

I need some help finding a service that checks your emails for spam and a bunch of other things. Last time I saw this site was maybe a year or two ago.

I can't seem to find it in my bookmarks. It's a paid service and I think it was promoted by some big time Internet Marketers. I think it checked a number of different spam filters. Plus there were many other features to help get your email delivered and maybe even formatted.

I use Aweber to send my emails but they only cover Spam Assassin. As I'm finding out, there are quite a few other systems out there that filter spam besides Spam Assassin. And if you screw that up a lot of your emails aren't going to be delivered even if you use Aweber and even if you have a zero spam score in Spam Assassin.

So if you know the product I'm talking about or if you have suggestions please let me know. For instance, does anyone know how to deal with the Microsoft Exchange 2003 spam filter.

Seems I'm failing it most of the time and yet I have no idea what to change to pass their filter. It's really crazy.

Thanks for your help in advance,

Roger Haeske
The 41-Year-Old Teenager