🚫 Free Email Spam Checker
Will your email land in spam? Paste your email content and find out instantly. Analyzes 15+ spam signals — headers, content, formatting — with an overall score and specific fixes. Free, no signup.
Why Use Our Free Spam Checker?
📊 Spam Score 0-100
Get an overall spam score with a color-coded indicator. Green (80-100) = clean, yellow (50-79) = at risk, red (0-49) = will likely land in spam. Know exactly where you stand.
🔍 15+ Signal Analysis
We check SPF/DKIM status, missing headers (Message-ID, Date, From), spam trigger words, shortened URLs, HTML-only content, ALL CAPS text, excessive punctuation, URL counts, and message body length.
📧 Header Validation
Detects missing essential headers that spam filters flag — Message-ID, Date, Subject, From. Also checks Reply-To mismatch and HTML-only formatting (no plain-text alternative).
🔤 Content Analysis
Scans for common spam trigger phrases ("act now", "click here", "limited time"), excessive punctuation (!!!), ALL CAPS abuse, and suspicious URL patterns that trigger spam filters.
📋 Actionable Fixes
Every flag comes with a specific fix. "Missing DKIM" → instructions to enable it. "Trigger word detected" → alternative phrasing. Not just a score — a repair guide.
🆓 100% Free & Private
No signup, no ads, no email storage. Your email content is analyzed locally and discarded. Check as many emails as you need — unlimited free checks.
How It Works
Paste the full email including headers, or just the body content. Both work.
Our engine checks 15+ spam signals — headers, content, formatting — in under a second.
Get your score, flagged issues with specific fixes. Apply fixes and resend with confidence.
📋 What Our Spam Checker Analyzes
| 🛡️ Authentication | SPF and DKIM status — missing auth is the #1 spam signal. We check if your domain has these configured. |
| 📧 Headers | Required headers (Message-ID, Date, From, Subject), Reply-To mismatch, HTML-only without plain-text alternative. |
| 💬 Content | Spam trigger words ("free", "act now", "limited time", "click here", "guaranteed"), excessive exclamation marks, ALL CAPS text. |
| 🔗 Links | Shortened URLs (bit.ly, t.co), suspicious domains, URL-to-text ratio. Too many links relative to text is a major red flag. |
| 📏 Structure | Message body length (too short = suspicious), HTML formatting issues, image-only emails with no text content. |
🔧 When to Use a Spam Checker
- 📬 Before Sending Campaigns — Test your email newsletter or marketing email before sending to thousands of recipients. Catch spam triggers that would tank your campaign.
- 🔄 After Changing Email Templates — Redesigned your email template? Run it through the spam checker to make sure styling changes didn't introduce spam signals.
- 🐛 Troubleshooting Deliverability — If your emails are landing in spam, use this alongside our Email Checker for a full diagnosis: DNS config (MX/SPF/DKIM/DMARC) + content analysis.
- 📊 Cold Outreach — Cold emails are highly scrutinized by spam filters. Test every variation before sending to make sure your carefully crafted message actually reaches inboxes.
- 📖 Learning What Triggers Spam — Not sure what makes an email look spammy? Paste different emails, see what gets flagged, and develop an intuition for inbox-friendly writing.
⚡ Pro Tip: Full Email Health Check
The spam checker analyzes your email content. For a complete picture, also check your domain configuration with our main Email Checker. It verifies MX records, SPF, DKIM, DMARC, and blacklists — the infrastructure side of deliverability. Together, these two tools give you 100% confidence your email will reach inboxes.
❓ Frequently Asked Questions
What does a spam checker do?
A spam checker analyzes your email content and headers to predict whether spam filters will flag it as spam. It checks for common spam signals: missing authentication (SPF/DKIM), trigger words, formatting issues, suspicious links, and header problems. The result is a score from 0-100 with specific recommendations to fix any issues found.
What spam score is "good"?
80-100: Clean email — very likely to land in the inbox. 50-79: At risk — some spam signals detected, may be filtered by aggressive spam filters. 0-49: High risk — multiple red flags, will almost certainly land in spam or be rejected. Aim for 80+ before sending any important email.
Is this spam checker really free?
Yes, completely free with no signup, no ads, and no limits. Check as many emails as you need. For domain-level checks (MX, SPF, DKIM, DMARC, blacklists), use our Email Checker which is also free for 5 checks/day. Need more? Pro plans start at €9/month with unlimited checks.
Does this tool actually send my email?
No. The spam checker analyzes your email content locally — nothing is sent anywhere. Your email is not delivered, forwarded, or stored. This is purely a content analysis tool. It's safe to paste sensitive emails — your data stays on your device.
🛠️ More Free Email & Deliverability Tools
📊 Professional Email Health Report
Get a detailed PDF audit with step-by-step fixes for your domain's email setup. Includes MX, SPF, DKIM, DMARC scores and recommendations.
Get Fix Report — €9 →