📧 Free Email Spam Checker
Paste your email headers and body — get a detailed spam score and analysis in seconds. Free, no signup.
🔍 Check Your Email Now →What Our Spam Checker Analyzes
🔐 SPF / DKIM / DMARC
Checks authentication headers: SPF pass/fail/softfail and DKIM signature validation status.
📋 Header Quality
Verifies Message-ID, Date, From, and To headers are present — missing headers are red flags.
🔍 Spam Trigger Words
Scans subject line and body for known spam keywords like "free," "act now," "winner," "casino."
🔗 Link Analysis
Counts URLs, detects shortened links (bit.ly, t.co, etc.) that hide the real destination.
📄 Content Format
Detects HTML-only emails (no plain text), ALL CAPS subjects, excessive punctuation.
🌐 Domain Validation
Looks up the sender's domain MX records — domains without MX may be spoofed or disposable.
How to Check Your Email for Spam
From Gmail: ⋮ → Show original. From Outlook: File → Properties → Internet headers.
Include the email body text to check for spam trigger words and suspicious formatting.
See your spam score (0-100), flagged signals, and a detailed breakdown of all checks.
📊 Understanding Your Spam Score
Your email passes all key checks. Likely to reach inboxes.
Some issues found. Review the flagged items — they might affect deliverability.
Multiple spam signals detected. This email is likely to land in spam folders or be rejected.
🛡️ Tips to Lower Your Spam Score
- Set up SPF, DKIM, and DMARC — These are the most powerful signals. Our SPF/DKIM/DMARC guide walks you through it.
- Always include a plain text alternative — HTML-only emails are flagged by many filters.
- Avoid spam trigger words — Even legitimate emails get caught if they use "free," "act now," "winner."
- Don't use shortened URLs — They hide the real destination and are heavily penalized.
- Include a Message-ID and proper Date header — Your email client/ESP should do this automatically.
- Don't use ALL CAPS subject lines — They're aggressive and scream spam.
- Use a real sending domain with MX records — Spoofed or no-reply domains get flagged.
❓ Frequently Asked Questions
How accurate is this spam checker?
Our checker analyzes 15+ signals that real spam filters use (like SpamAssassin rules). While it can't replicate every mail provider's proprietary algorithm, it gives a strong indication of how likely your email is to trigger spam filters.
Where do I find email headers?
Gmail: Open email → ⋮ (three dots) → Show original.
Outlook: Open email → File → Properties → Internet headers.
Apple Mail: View → Message → Raw Source.
Thunderbird: View → Message Source (Ctrl+U).
Is my email content stored?
No. All analysis runs in memory. We don't store, log, or share your email headers or body content.
Can I test emails before sending?
Yes! Write your email, copy the content and headers (your ESP can generate test headers), and paste them into our checker to see what spam filters might flag.
Is Your Email Spam-Free?
Paste your email now and get a detailed spam analysis in seconds. Free, no signup.
🔍 Analyze Your Email Now →🔗 Related Tools
🛡️ Email deliverability issues? Get a professional PDF audit with step-by-step fixes.
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