Spam Score Tester
Analyze a raw email and get a 0–10 spamminess score with actionable checks
This page provides original, human-reviewed information about spam signal testing, explaining which content patterns trigger filters, how spam-assassin-style scoring works, and practical rewrites that reduce spamminess.
The spam score estimates how likely your message might be flagged by spam filters based on authentication (SPF/DKIM/DMARC) and content signals (links, images, text ratio, and more).
- 0–4.9: High risk - likely to be filtered. Improve authentication and content quality.
- 5.0–7.9: Moderate - acceptable but could be improved for reliable inboxing.
- 8.0–10: Good - generally safe to send.
Authentication
- SPF alignment and pass/fail results
- DKIM signature, domain alignment, and pass/fail
- DMARC policy evaluation (pass/fail)
Content
- HTML vs plain text detection and text-to-HTML ratio
- Number of links and images, use of remote images
- Presence of shortened URLs and missing image alt attributes
- List-Unsubscribe header detection
- Always authenticate with SPF, DKIM, and DMARC. Align the DKIM d= domain with the From domain.
- Keep a healthy text-to-image ratio. Avoid image-only emails.
- Limit the number of links and avoid using URL shorteners when possible.
- Add a List-Unsubscribe header for marketing emails to reduce complaints.
- Use descriptive ALT attributes for images and avoid broken links.
Is this score the same as SpamAssassin?
No. We provide an indicative 0–10 score inspired by common filter checks to help you improvedeliverability. Exact scores can vary across providers.
What input do I need?
Paste the full raw email including all headers and the body.
Related Tools
Need Help?
Our tools are designed to be intuitive, but if you need assistance, we're here to help.
About Our Tools
Professional-grade email and DNS diagnostic tools trusted by IT professionals worldwide.