// Free Online Tool
Spam Words Checker
Paste your email subject and body to instantly detect spam trigger words. Get a spam score, see flagged words highlighted, and receive tips to improve deliverability.
// FAQ
Frequently Asked Questions
Spam trigger words are specific words and phrases that email spam filters scan for when deciding whether to deliver an email to the inbox or divert it to spam. Common examples include "free," "act now," "limited time," and "guaranteed." While a single trigger word rarely causes problems on its own, using many of them together significantly increases the likelihood that your email will be filtered.
Spam filters have evolved beyond simple keyword matching, but trigger words remain one of several signals they evaluate. Avoiding them is a straightforward step toward better deliverability.
The spam score is calculated by scanning your text for known trigger words across three severity levels:
- High-risk words: +5 points each (e.g., "free," "winner," "act now")
- Medium-risk words: +3 points each (e.g., "discount," "exclusive," "deal")
- Low-risk words: +1 point each (e.g., "subscribe," "click below," "marketing")
Additional penalties are applied for excessive ALL CAPS usage (+10 if more than 20% of words are all caps), excessive exclamation marks (+5), excessive dollar signs (+5), and too many URLs (+5). The total is capped at 100.
No. Email deliverability depends on many factors beyond word choice. Modern spam filters evaluate sender reputation, domain authentication (SPF, DKIM, DMARC), sending volume and patterns, recipient engagement history, HTML structure, image-to-text ratio, and more.
Reducing spam trigger words is one important piece of the puzzle, but a comprehensive deliverability strategy should also address technical authentication, list hygiene, and sending practices.
- 0–30 (Safe): Your content is unlikely to trigger spam filters based on word choice. Most well-written emails fall in this range.
- 31–60 (Warning): Your content contains enough trigger words to raise flags. Review the highlighted words and consider replacing them with neutral alternatives.
- 61–100 (High Risk): Your content is very likely to be caught by spam filters. Significant rewriting is recommended before sending.
Aim for a score under 30 for the best chance of landing in the inbox.
No. This tool performs a content-only analysis by scanning your text for known spam trigger words and patterns. It does not send any emails, check your sender reputation, verify domain authentication, or test inbox placement.
For full deliverability testing, you would need a dedicated email deliverability platform (such as GlockApps, Mail Tester, or Litmus) that sends test emails to seed accounts across major providers like Gmail, Outlook, and Yahoo.
Free Email Spam Words Checker - Improve Your Email Deliverability
This spam words checker scans your email content for known spam trigger words and patterns that can cause your messages to land in the spam folder. It runs entirely in your browser - your email content is never sent to any server, making it safe to test even sensitive or confidential communications.
Why Spam Words Matter for Email Deliverability
Email service providers like Gmail, Outlook, and Yahoo use sophisticated spam filters that evaluate dozens of signals to decide whether an email reaches the inbox. One of the most fundamental signals is the presence of known spam trigger words in the subject line and body. Words like "free," "act now," and "guaranteed" appear disproportionately in spam emails, so their presence raises a red flag with filters. While no single word will automatically land you in spam, accumulating many trigger words dramatically increases the risk.
How to Use This Tool Effectively
- Test subject lines separately: Subject lines carry more weight with spam filters than body text. Paste your subject line alone first, then test the full email.
- Focus on high-risk words first: Replacing high-risk triggers has the biggest impact on your score. Medium and low-risk words are less critical individually.
- Watch for patterns: ALL CAPS, excessive punctuation, and multiple URLs are pattern-based triggers that add up quickly. Professional formatting helps.
- Use alternatives: Instead of "free," try "complimentary" or "no-cost." Instead of "act now," try "take the next step." Small word choices can make a significant difference.
Beyond Spam Words - Other Deliverability Factors
While this tool helps with content optimization, email deliverability is influenced by many other factors: sender reputation (built over time through consistent sending and low complaint rates), authentication (SPF, DKIM, and DMARC records on your domain), list quality (avoiding purchased lists and removing inactive subscribers), and engagement (emails that get opened and clicked signal legitimacy to providers).
Privacy - What We Collect
Nothing. All spam analysis happens client-side in your browser using JavaScript. No network requests are made during analysis. AtomnyX does not receive, log, or store your email content, your results, or any information about your use of this tool.