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Business Email Security Check

Can criminals pretend to be your business by email?

We check the public controls that protect your domain from common spoofing and impersonation attempts, then deliver a secure report with the most important fixes first.

Check my domain for $29One-time payment · one domain

What we check

  • SPF, DKIM, and DMARC evaluation
  • Mail-provider and routing analysis
  • Spoofing and impersonation exposure review
  • Secure customer report with prioritized fixes

Authorized first

You verify your email, name the domain, and accept target-specific terms before payment.

Secure delivery

Payment status and the finished report stay behind your verified client account.

Practical result

The report explains SPF, DKIM, DMARC, mail routing, and impersonation exposure in plain language.

If you want help fixing it

Email protection remediation from $199.

After you receive the report, SunTzu can help plan and implement the recommended DNS and mail-authentication changes under a separate scope. Provider access, complex migrations, and third-party fees may require a custom quote.

Start the $29 check

Questions about your report—or another technology issue?

We can explain the findings, help prioritize your next steps, or discuss other technology challenges affecting your business. You do not need to know where to start.

Ask SunTzu for help

Asking a question does not commit you to paid work. Any proposed scope and cost will be explained first.

Keep track of changes after your assessment.

An assessment reflects the evidence collected at that time. We recommend ongoing monitoring and scheduled reassessments to identify meaningful changes and verify agreed fixes.

Discuss ongoing monitoring

We will help define the assets, checks, schedule and notification process that fit your needs.