Spam trigger word checker

What a spam word checker can and cannot tell you

Modern filters do not work from a banned word list. Gmail, Outlook and the large filtering vendors run statistical models trained on billions of messages, weighing sender reputation, authentication, recipient engagement and content together. No single phrase in your email will send it to the spam folder by itself. What still holds true is that certain patterns correlate strongly with unwanted mail, and a message carrying several of them at once gives a filter more reasons to decide against you at the margin. This tool measures how much of that pattern your copy contains.

How the scan works

The dictionary groups phrases into eight categories: money and earnings, urgency and pressure, guarantees and hype, free offers, finance and credit, pharma and scam markers, compliance language, and soft filler. Each category carries a weight, with hard financial and urgency claims counting for considerably more than a tired opener like touching base. Matching is done on word boundaries so that free inside freelance does not register, and longer phrases take precedence, so a hundred percent free is counted once rather than as two separate hits.

Density, not just count

Three trigger phrases in a forty word email is a much stronger signal than three in four hundred words. The score therefore includes a density term alongside the raw weighted total. This is also why a long newsletter can carry more promotional language than a cold first touch without scoring the same.

Structural signals

Beyond vocabulary, the checker looks at shape. A subject line in full capitals, three or more exclamation marks, several words shouting in the body, three or more links in a first contact email, a body so short it is effectively just a link. Each of these is common in promotional mail and rare in the person-to-person mail that filters are trying to protect. They are reported separately from the word matches because the fix is different: you rewrite the shape, not the vocabulary.

The soft filler category

Phrases like hope this email finds you well or just checking in are not spam triggers in any technical sense. They are flagged at low weight because they are the most common opening lines in automated outreach, which means recipients pattern match on them and delete. That costs you replies, and replies are the engagement signal that protects your sending reputation over time. Treat those flags as editorial advice rather than filter risk.

What actually decides placement

Authentication, sending history, complaint rate, bounce rate and engagement do most of the work. Content is the smallest of those inputs for an established sender and matters most when everything else is new or borderline. If your copy scores low here and mail is still landing in spam, the problem is almost certainly upstream: check your SPF, DKIM and DMARC records, then your list quality and ramp.

Nothing is uploaded

The text you paste stays in your browser. It is not sent to a server, logged, or retained. The dictionary is bundled in the page script, so the scan works offline once the page has loaded.