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Email spam checker

Emails going to spam? Test your email spam score in minutes.

Forward a real email to SamuelGuard and get a plain-English spam risk report with deliverability checks for SPF, DKIM, DMARC, content, subject lines, links, and sender reputation. Get AI advice on how to fix issues

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to send your email to. Reloading generates a new one.

02

Read the report

See spam-risk score, auth results, content risks, and practical fixes in plain English.

Learn

Practical guides for emails, newsletters, and domain authentication.

These guides target the real questions senders ask when invoices, newsletters, and business emails start landing in spam.

Email spam checker

How spam score checks work and what SamuelGuard looks for.

Why emails go to spam

Common causes, from authentication gaps to content risks.

SPF, DKIM and DMARC

Understand the email authentication checks that affect trust.

Newsletter spam test

Check campaigns before sending them to your list.

Deliverability checklist

A small-business checklist for safer sends.

Mail-tester alternative

A plain-English way to test real email messages.
Plans

Start free, then keep the history when the checks start to matter.

Public tests are useful for quick confidence. Accounts add saved reports, private history, domain monitoring, and API access when SamuelGuard becomes part of your regular email workflow.

Free
Free
  • One-off public inboxes for quick checks
  • 20 tests per month
  • 24-hour public result links
  • Spam risk, delivery health, auth, content, shape, blacklist, subject, and compliance checks
  • Plain-English findings for each report
Start free
Starter
$19.00/mo
  • Dedicated account inbox based on your email address
  • 100 tests per month
  • Private saved report history
  • 30-day report retention
  • 3 monitored domains
  • Weekly domain health email reports
  • SPF, DKIM, DMARC, and MX monitoring
Create account
Pro Popular
$49.00/mo
  • Dedicated account inbox based on your email address
  • 500 tests per month
  • 365-day report retention
  • 25 monitored domains
  • Better long-term domain history
  • More room for repeat testing after fixes
  • Built for serious senders and growing teams
Create account
API
$99.00/mo
  • Dedicated account inbox plus API-created test addresses
  • 5,000 tests per month
  • API key access
  • Create tests from your own app
  • Poll processing status and fetch results
  • 365-day retention
  • Best for platforms, agencies, CRMs, and invoice apps
Create account