Free Email Spam Checker
Paste your email copy and get a spam score. We scan for trigger words, formatting issues, and patterns that land you in spam.
Paste your copy to get a spam score
We check 300+ trigger words and phrases, ALL CAPS, exclamation marks, links, currency symbols, and subject length. Nothing leaves your browser.
How it works
3 quick steps from input to answer. No account, no install.
Back to the tool- 01
Paste your email subject and body
Works with plain text or HTML. Include the subject line for a complete check.
- 02
We scan for 200+ spam triggers
Checks trigger words, excessive caps, link ratios, formatting, and more.
- 03
Get a score with specific fixes
See exactly which words and patterns flagged, with suggestions to fix each one.
Why this matters
Spam filters are getting smarter, but they still catch legitimate emails. Words like "free," "guarantee," and "act now" can trigger filters even in professional outreach. Checking your copy before sending prevents wasted sends and protects your sender reputation.
SendboxCatch spam triggers before sending
Sendbox scans every email in your sequence for spam triggers automatically. No manual checks needed.
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We check for 200+ known spam trigger words and phrases, excessive capitalization, too many exclamation marks, high link-to-text ratio, image-heavy content, and common formatting patterns that spam filters flag.
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