Free · Unlimited · No signup · 30 seconds

Test the spammyness
of your emails.

Send a test email, get an instant deliverability report. We check SPF, DKIM, DMARC, 50+ blacklists, SpamAssassin, and content. Then we show you exactly what to fix.

1 Send your email to this address
test-1b8e4b50@spamtest.io
2 Click below to see your score
Your report URL: https://spamtest.io/report/1b8e4b50
100% Free
Unlimited tests
No signup
~30 seconds

How it works

From sent to verified, in three steps.

01 Send

Send us any email

Any subject, any content. Send from the system you're testing: Gmail, your SMTP, your newsletter platform.

02 Analyze

We run 8+ checks

SPF, DKIM, DMARC, rDNS, SpamAssassin, 50+ blacklists, HTML structure, content. Every test mail providers actually care about.

03 Fix

Clear score + fixes

Score out of 100, per-check breakdown, and actionable instructions for every failing test. Share the report URL with your team.

Checks

Every check you need. One test.

We run the same verifications mail providers run, so you see your score before Gmail, Outlook, or Apple Mail do.

Spam Score

SpamAssassin analysis with full rule breakdown

SPF Record

Sender Policy Framework validation + alignment

DKIM Signature

Cryptographic domain signature verification

DMARC Policy

Domain-based Message Authentication

Reverse DNS

PTR record + forward-confirmed verification

50+ Blacklists

Major DNSBL/RBL feeds scanned in parallel

Content Analysis

HTML structure, spam words, links, alt tags

Headers

Full raw headers + anomaly detection

For developers

Programmatic access via REST API.

Automate deliverability monitoring. CI pre-send checks. Customer support triage. Webhook alerts when your score drops.

Free

Web UI
€0/forever

Everything you need via the web.

  • Unlimited spam tests
  • Full report (SPF, DKIM, DMARC, SpamAssassin, blacklists)
  • Shareable report URLs, public JSON
  • Free DNS tools (SPF, DKIM, DMARC, blacklist check)
Start testing

Pro API

REST + Webhooks
€5/month

Automate deliverability.

  • REST API: generate test address, retrieve JSON report
  • Webhooks: push reports when tests complete
  • Higher rate limits, priority processing
  • 30-day report history, custom test prefixes
Coming soon - notify me