Free tool
Email Spam Checker
Detect spam trigger words in your email before you send it. Paste your subject and body, get a risk score, and fix the words that send you to the spam folder.
- ✓ Your text never leaves your browser, so it stays private.
- ✓ Checks 120+ trigger words across four categories.
- ✓ Highlights every match directly in your text.
- ✓ Free, unlimited checks, no signup required.
Result
This free email spam checker scans your message for the trigger words spam filters look at: urgency pressure, money promises, shady claims and overpromising language. Every match is highlighted in your text so you can rewrite it in seconds. Nothing is uploaded anywhere, the analysis runs entirely in your browser. Cleaner copy means better deliverability, higher open rates and a sender reputation that stays intact, whether you send one email or a full campaign.
How to use the email spam checker
- 1
Paste your email subject line and body into the text box.
- 2
Click "Check for spam words" to scan your copy.
- 3
Review the risk score and the highlighted trigger words.
- 4
Rewrite or remove the highlighted words and phrases.
- 5
Run the check again until your risk score is low, then send with confidence.
Frequently asked questions
What is a spam trigger word?
A spam trigger word is a word or phrase that spam filters associate with unwanted or deceptive email, such as "act now", "free money" or "no credit check". One occurrence rarely hurts, but several of them combined with other signals can push your message into the spam folder. Rewriting them in plain language keeps your intent while lowering the risk.
Do spam words alone send my email to spam?
No. Modern filters weigh many signals: sender reputation, authentication (SPF, DKIM, DMARC), engagement history, links and formatting. Spam words are one signal among many, but they are the easiest one to fix. Cleaning them up is a quick win, especially when you send to a large list.
Is my email content stored or sent to a server?
No. The check runs entirely in your browser with JavaScript. Your text is never uploaded, logged or stored anywhere, so you can safely test confidential drafts.
How is the risk score calculated?
The tool counts how many trigger words appear and how dense they are relative to the length of your text. A couple of matches in a long email is low risk, while many matches in a short message is high risk. Use the score as a guide, then read the highlights to decide what actually needs rewording.
How do I improve email deliverability beyond removing spam words?
Authenticate your domain with SPF, DKIM and DMARC, send from a warmed-up address, keep your list clean, personalize your messages and make unsubscribing easy. Sending at a reasonable pace also matters: tools like Mail Merge for Gmail throttle your sending to stay within Gmail's limits.
Can I use this checker for cold email and newsletters?
Yes. The trigger word list covers the patterns filters flag in cold outreach, marketing campaigns and newsletters alike. Check every campaign before sending it, since a single risky sentence can affect the whole send.
Ready to send emails that land in the inbox?
Write clean copy, then send personalized campaigns from Gmail and Google Sheets with Mail Merge.