Step 1
Paste your subject line
Drop your draft subject line into the subject field. The analyzer evaluates length, ALL CAPS, fake Re: / Fw: prefixes, and trigger words.
Free Email Spam Score Checker
An email spam score checker analyzes your subject line and body copy for words, formatting, and patterns that spam filters flag. It returns a 0-100 risk score and specific recommendations to help your message land in the inbox instead of the spam folder.
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How it works
Step 2
Paste your email body
Paste plain text or HTML. The analyzer scans for spam words, link density, image ratio, ALL CAPS, punctuation abuse, and suspicious phrases.
Step 3
Click Analyze
All checks run in your browser instantly. Nothing is sent to a server.
Frequently Asked Questions
What is an email spam score?
An email spam score is a numeric estimate of how likely your email is to be filtered as spam. It is calculated by scanning the subject line and body for words, formatting, and patterns (excessive caps, urgency words, image-only content, shortened links) that mainstream spam filters weight heavily. Lower scores indicate a higher likelihood of inbox placement.
How is the spam score calculated?
The score combines penalties from several rule categories: spam trigger words (urgency, money, free, prizes, exaggeration, scammy phrases), formatting flags (ALL CAPS ratio, exclamation marks, stacked punctuation), link density and shortened URLs, image-to-text ratio, subject line hygiene (length, fake Re: / Fw: prefixes, all caps), suspicious phrases like "Dear friend" or "this is not spam", and missing personalization. Each triggered rule contributes points to a 0-100 risk score.
What are common spam trigger words to avoid?
The most reliable spam triggers include free, act now, urgent, winner, congratulations, click here, limited time, 100% free, risk-free, guaranteed, make money, earn $, lowest price, dear friend, this is not spam, lose weight, viagra, casino, and prize. Hype, urgency, prize claims, and money-from-nothing language are the highest-risk categories. Avoid stacking several together in one email.
Will avoiding spam words guarantee inbox placement?
No. Spam words are only one signal. Inbox placement also depends on sender authentication (SPF, DKIM, DMARC), domain and IP reputation, recipient engagement history, list hygiene (no bounces or spam-trap hits), and proper unsubscribe handling. Use the MailParse SPF Record Checker, DKIM Checker, and DMARC Record Generator to fix the authentication side after you clean up your content.
Is this tool free? Do you store my email content?
Yes, the tool is 100% free and runs entirely in your browser. Your subject line and body never leave your device. No content is sent to MailParse, no analytics on the email itself, and nothing is stored on a server.
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