What is Spam trigger words?
Spam trigger words are words and phrases associated with unwanted mail, such as "100% free", "act now" or "limited time", that can push a message toward the spam folder or put a reader off.
Also called: spam words.
Modern filters do not block a message for one word. They weigh many signals, and sender reputation and authentication count for far more than vocabulary. But a draft dense with hype, urgency and money language reads as spam to filters and to people alike, and the second matters more for cold email: a reader who feels sold to marks the message as spam.
The useful categories are urgency (act now, only a few left), money and offers (free, guaranteed, double your), shady formatting (all caps, many exclamation marks, link-heavy messages) and impersonal openings (Dear Business Owner). Each has a plain alternative that says the same thing specifically.
Subject lines carry extra weight, and some US states regulate them directly; bait openers such as a fake Re: or Fwd: are both a spam signal and a legal risk under CAN-SPAM, which forbids deceptive subject lines.
Paste a draft into the spam word checker to see each flagged phrase with a suggested rewrite, and test subjects in the subject line grader.