SOURCE:
http://sitesell.comAvoid any of the "telltale" triggers that might label your mailing as spam. Some of the most obvious negatives to avoid in your e-mails...
* The excessive use of ALL CAPS in the subject line and message body of your e-mail.
* The use of trigger words like "free" (used alone, or in combination with any number of words like "trial," "money," "quote," "sample," "membership," "access," and so on), "sex," "XXX," "spam," "$$$," "checks," "money orders," "extra income," "as seen on TV," and so on. Even using seemingly harmless words like "search engine listings," "cable converter", and "reverses aging" will penalize your e-mail, so you must be exceptionally vigilant in the analysis of your SpamCheck report.
* The excessive use of punctuation "!!!"
Here are some tips for staying on the "good" side of the various spam checkers, filters, etc. that stand between your e-mail and your reader's INBOX. Use as many of these "good triggers" as possible, to prove that yours is a real, justifiable mailing...
* Use of the words "news", "newsletter", or "list" in your subject line
* Indication of publishing frequency in the subject line -- weekly, daily, monthly
* Inclusion of date of newsletter in the subject
* Inclusion of the issue number in the subject line
* Make sure your newsletter has some substance -- when was the last time you saw spam that had more than a few lines of text?