It’s a great idea to test how YOUR message stacks up before you send it out.
Lyris’ Content Checker (http://www.lyris.com/contentchecker/) tells you how your newsletter ranks in Spam Assassin. All you do is copy your newsletter text and paste it into the box on their site. They’ll run your free report and e-mail a copy to you. It usually arrives within minutes.
The report will tell you exactly which words are costing you points. Usually you should only be concerned if your score is over 5 points. If so, you can either delete those words or disguise them.
Other content checkers you can refer to are: