Email Deliverability & Authentication Tester
Verify SPF records, DMARC protection policies, and MX mail routing to ensure your transactional and marketing emails land in the inbox.
How to Use Email Deliverability Tester
Input URL or Markup
Enter the target webpage URL, domain name, or paste the raw markup into the input field.
Run Technical Audit
Click the action button to parse tags, simulate crawler directives, or query live DNS records.
Review Actionable Insights
Inspect diagnostic status badges, recommendations, and copy formatted audit results.
Frequently Asked Questions
What are SPF, DKIM, and DMARC?
They are standard email authentication protocols. SPF specifies authorized sending mail servers, DKIM cryptographically signs email messages, and DMARC defines policies for handling unauthenticated messages.
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