I looked but did not see a question related specifically at spam analysis tools. What I want to do is run our auto generated notification emails through some tools to determine their spam likelihood rating.
the spam assassin score is always a good test. This tool gives you a spam assassin rating on windows, without having to install spam assassin.
You might also want to look a list of the spam assassin tests
I hope your not a spammer. If i start getting more viagra emails, I'll know it was you!