Does this tool tell me if my email will land in spam?

Not directly — spam filtering depends on many signals beyond word choice (sender reputation, DNS authentication, recipient engagement). But spam-trigger words in subject lines and bodies are a major factor, and this tool catches them in seconds. Use it alongside proper DNS setup (SPF/DKIM/DMARC) and a warm-up schedule.

Is this checker AI-powered?

Not yet — this v1 uses a curated static wordlist of ~400 trigger phrases plus regex patterns (ALL CAPS, excessive punctuation, dollar signs, urgency markers). An LLM-powered version that explains WHY each phrase is spammy and auto-rewrites full emails is on our roadmap.

What's a good spam score?

80-100 is safe. 70-79 is borderline — review the flagged phrases. Below 70, rewrite. Cold emails with scores below 50 land in spam at 40%+ rates even with perfect DNS setup.

Why is the word 'FREE' a spam trigger?

'FREE' in all caps or at the start of a subject line is one of the strongest historical spam signals, dating back to early SpamAssassin rules. It's associated with get-rich-quick schemes and unsolicited promotions. Alternatives that preserve meaning: 'complimentary', 'no charge', 'included', or simply dropping the word entirely.

Does this tool send my email anywhere?

No. The entire check runs in your browser using a bundled wordlist and regex. Nothing is sent to Winnr's servers or any third party. Your email copy stays on your device.

Can I still use urgency language in cold email?

Sparingly. One urgency marker ('quick question', 'by Friday') is usually fine. Multiple urgency markers ('ACT NOW', 'limited time', 'expires soon') stack into a strong spam signal. Prefer specific dates/times over generic urgency.

Free Cold Email Spam Word Checker (2026)

TL;DR

Paste your cold email subject and body; the checker highlights ~400 known spam-trigger phrases plus patterns (ALL CAPS, excessive punctuation, dollar signs, urgency markers). A subject-line trigger is weighted 3x heavier than a body trigger. Aim for a score of 80+. The entire check runs in your browser — nothing is sent to any server.

Spam Word Checker

Subject line: Subject triggers are weighted 3x heavier than body triggers.

Email body:

100/100

Paste your email to begin

Issues found

No issues yet — paste your email above.

Highlighted preview:
(subject)
(body)

All checks run in your browser against a bundled wordlist. Your email copy is never sent to any server.

How the Score Works

The checker starts at 100 and deducts:

15 points per spam phrase in the subject line (3x weighted)
2 points per spam phrase in the body
12 points per pattern flag in the subject (ALL CAPS, excessive punctuation, multiple dollar signs)
2 points per pattern flag in the body

Score bands: 80-100 safe · 60-79 borderline · below 60 rewrite recommended.

Trigger Categories

The bundled wordlist covers ~400 phrases across these categories (sourced from SpamAssassin defaults, Mailshake's spam word list, and Winnr platform data):

Urgency markers — "act now", "limited time", "expires soon", "urgent"
Money/greed — "make money", "earn $", "free money", "guaranteed income"
Free/no-cost claims — "100% free", "free trial", "no obligation", "no hidden fees"
Health/miracle — "lose weight", "miracle", "cures", "reverses aging"
Financial bait — "refinance", "consolidate debt", "pre-approved", "no credit check"
Adult/scam — "xanax", "viagra", "meet singles", "enlargement"
Deceptive language — "this is not spam", "why pay more", "hidden charges"

Rewrite Patterns That Work

"Free" → "complimentary", "included", or drop it. "Get a free audit" → "Get a complimentary audit"
"Act now" → specific date. "Act now" → "Let me know by Friday"
"Guarantee" → "promise", "commit", or be specific. "We guarantee results" → "Most clients see 20%+ in 90 days"
"Risk-free" → drop it and state the refund policy. "Risk-free trial" → "30-day refund if it isn't a fit"
ALL CAPS → sentence case. "EXCLUSIVE OFFER" → "A quick offer for you"
Exclamation stacks → single period. "URGENT!!!" → "Quick note."

Related: Use the inbox calculator to size your fleet. Publish SPF, DKIM, and DMARC before sending.

Frequently Asked Questions

Will this tell me if my email lands in spam?

Not directly — spam placement depends on sender reputation, DNS authentication, and recipient engagement too. But trigger words are a major factor, and this tool catches them in seconds.

What is a spam trigger word?

A phrase spam filters associate with unsolicited email: "FREE", "act now", "guarantee", "no obligation", "$$$", and so on.

Is this AI-powered?

Not yet. v1 uses a curated static wordlist (~400 phrases) plus regex patterns. LLM-powered "explain + rewrite" mode is on the roadmap.

What's a good score?

80-100 is safe. 70-79 is borderline. Below 70, rewrite.

Does this send my email anywhere?

No. The check runs entirely in your browser. Nothing is logged.

Why are subject triggers weighted 3x?

Spam filters treat subject-line signals as much stronger indicators than body signals. A clean body with a spammy subject still lands in spam.

Can I still use urgency?

Sparingly. Prefer specific dates ("by Friday") over generic urgency ("ACT NOW"). One urgency marker is usually fine; stacking multiple triggers a stronger spam signal.