Free tool
Email spam checker
Paste your subject line and email — get an instant spam score with exact fixes. Free, no signup.
What is an email spam score?
An email spam score estimates how likely spam filters are to flag your message. It checks for trigger words (like 'free' or 'guarantee'), excessive capitalization, too many links or exclamation marks, and deceptive subject lines. A high score means your email looks safe; a low score means rewrite before sending. This checker runs 8 heuristic tests instantly in your browser.
FAQ
Questions, answered
Paste your subject line and email content — the checker runs 8 heuristic tests (spam trigger words, ALL CAPS, exclamation marks, link count, deceptive Re:/Fwd: prefixes, subject length and body length) entirely in your browser and gives you a 0–100 score with a specific fix for every issue found.
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