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Email spam word checker

Paste your email text and instantly find spam trigger words that could send your message to the junk folder. Get replacements and a risk score.

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Paste an email and hit check to scan for spam trigger words.

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spam risk score
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flagged words
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total words
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ALL CAPS words
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excess punctuation
Spam risk
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Category breakdown
Your email with flagged words
Flagged words & suggested replacements
Tips for better deliverability

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Spam trigger words: what you need to know

What are spam trigger words in emails?

Spam trigger words are specific words and phrases that email spam filters look for when deciding whether to deliver an email to the inbox or send it to spam. Common examples include "free", "act now", "guaranteed", "no obligation", and "click here". Using too many of these in a single email increases the chance it gets flagged. Modern filters also look at patterns like ALL CAPS, excessive exclamation marks, and combinations of multiple triggers.

How many spam words are too many in an email?

There is no universal threshold, because spam filters weigh context, sender reputation, and overall patterns. However, as a rule of thumb, having more than 2-3 flagged spam words per 100 words puts your email at higher risk. A single spam word will not doom your email, but stacking several urgency and money words together significantly raises the chance of being filtered. Context matters too: "free trial" in a SaaS email is less risky than "FREE CASH NOW!!!".

Does writing in ALL CAPS trigger spam filters?

Yes. Excessive use of ALL CAPS is one of the most reliable spam signals. Spam filters interpret all-caps words as shouting or sensationalism, which is common in spammy marketing. A few short uppercase words like acronyms (HTML, CEO, FAQ) are fine, but entire sentences or subject lines in caps will hurt deliverability. Even a subject line that is entirely uppercase can be enough to trigger filtering on its own.

Will my email go to spam if I use the word "free"?

Not necessarily. Modern spam filters look at overall patterns rather than individual words in isolation. Using "free" once in context (e.g., "free trial" or "free consultation") is generally fine, especially if your sender reputation is good. However, combining "free" with other spam triggers like "act now", multiple exclamation marks, or "no obligation" increases the risk significantly. The key is moderation and natural language.

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