Email Spam Score Tester
Your campaign looks fine in preview — but inbox providers run 200+ spam checks before delivering it. Send a test email and get a full spam analysis: authentication, SpamAssassin score, blacklist status, and content flags, all before you hit send.
Test Your Email's Spam Score
We'll generate a unique test address. Send your email to it, and we'll analyze everything — authentication, content, reputation, and more.
How to test:
- 1 Copy the test address above
- 2 Open your email marketing tool (Klaviyo, Mailchimp, SendGrid, etc.) and send a test email to that address
- 3 Wait here — results appear automatically once we receive and analyze your email
Get your full spam analysis report emailed to you
No spam. Unsubscribe any time.
Spam report sent — check your inbox.
What Inbox Providers Check Before Delivering Your Email
Authentication: the first filter your email hits
Before inbox providers evaluate content, they check SPF, DKIM, and DMARC. A single authentication failure lowers your email's reputation score before any content analysis begins. Emails failing DMARC at Gmail are automatically routed to spam if your policy is p=quarantine.
SpamAssassin: the content scoring engine
SpamAssassin assigns point values to hundreds of content signals — excessive punctuation, all-caps subject lines, HTML-to-text ratio, image-only emails, certain link patterns, and specific phrases. A score above 5 is typically filtered. This tool shows your score before the ISP sees it.
Blacklist checks at send time
Inbox providers query real-time blacklists at the moment of delivery — not when you send. If your IP was listed 10 minutes ago, your current campaign may already be blocked. The spam tester checks 50+ blacklists as part of the analysis.
Content signals that trigger filters in 2025
The signals that correlate most with spam filtering in 2025: excessive use of link shorteners, mismatched From and Reply-To domains, HTML without a plain-text alternative, subject lines containing spam trigger words, and body links pointing to recently registered domains.
How Spam Scoring Works
Your email receives a score from 0 to 10, where 10 is perfect. The score is calculated across six categories:
- 3.0 pts Authentication — SPF, DKIM, and DMARC configuration
- 2.0 pts SpamAssassin — content-based spam detection score
- 2.0 pts Blacklists — sending IP reputation across major DNSBLs
- 1.5 pts Content — trigger words, HTML ratio, image balance
- 1.0 pts Headers — List-Unsubscribe, Message-ID, Date accuracy
- 0.5 pts Server — reverse DNS, HELO identity, MX records
A score of 9 or above means your email is well-configured and unlikely to hit spam. Below 5, there are critical issues you should fix before sending campaigns.
Lock Down Your Authentication
Test Before You Send. Monitor After You Do.
Manual pre-send tests catch problems in a single campaign. InboxEagle monitors your inbox placement rate on every domain you send from — surfacing spam filter trends across Gmail, Outlook, and Yahoo so you see deliverability sliding before it affects revenue. Start free — no credit card required.
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