Some anti-spam programs search for words and phrases that are typical of spam and assign each incoming e-mail a "score." If your e-mail has too many of these words and phrases, you receive a high score, and you may be blocked.
Here are the most common "trigger" words and phrases that you may be using in your email newsletter:
cancel at any time
check or money order
for only ($)
this is not spam
to be removed
See Appendix for more spam trigger words and phrases.