Email Security & Deliverability Checker (SPF, DKIM, DMARC)
Inspect your domain MX, SPF, DMARC, and DKIM DNS records to prevent email spoofing, phishing, and spam folder delivery.
Tip: You can enter yourcompany.com or an address such as hello@yourcompany.com. SPF, DKIM, DMARC, and MX records belong to the domain, so the tool automatically checks yourcompany.com and does not scan an individual mailbox.
About the Email Security Check
Validate DNS records for SPF syntax, DKIM alignment, and DMARC enforcement policies. Use this free tool as a focused first review, then prioritise the improvements that matter most to your visitors, visibility, and business goals. Every result is easier to act on when you compare it with your live website, analytics, and customer feedback.
What this tool helps with
The Email Security Check helps you review whether your public website and business communications present stronger trust and security signals. It is built for business owners, web developers, and teams maintaining a public website or company email domain who need a clear next action rather than a long, unfocused checklist.
How to use the result
- Provide the public URL or domain requested by the check.
- Read each finding in the context of your hosting, DNS, or application setup.
- Confirm changes after deployment and seek specialist advice for high-risk findings.
Best practices for stronger results
- Use HTTPS on every public URL.
- Review security headers after platform changes.
- Keep DNS authentication records maintained.
Important: It does not perform intrusion testing, vulnerability exploitation, or a complete security certification.
Email Security Check FAQs
Answers to common questions before you use this free online tool.
What does the Email Security Check do?
Validate DNS records for SPF syntax, DKIM alignment, and DMARC enforcement policies. It gives you a practical first review without installing software or creating an account.
How does the Email Security Check work?
The tool inspects publicly exposed HTTP headers or DNS records and highlights configuration gaps. Results reflect the public URL, domain, or values you submit at the time of the check.
Who should use the Email Security Check?
It is useful for business owners, web developers, and teams maintaining a public website or company email domain. You can use it before a launch, during a website review, or when prioritising your next improvement.
What should I do after using the Email Security Check?
Start with the most relevant finding, make the change in your live environment, and run the tool again. Combine the result with analytics, user feedback, and business context before making important decisions.
Are the Email Security Check results completely accurate?
It does not perform intrusion testing, vulnerability exploitation, or a complete security certification. Use the result as a practical starting point and validate important changes in your live environment.