Skip to tool

Email Authentication Checker

Check SPF, DKIM, and DMARC records for a domain.

How to Use This Tool

  1. Enter the Email Authentication Checker input in the field on the page.
  2. Click "Check" to run the tool in your browser.
  3. Read the result below the form and copy it if you need it in another app.

Learn More About Email Authentication Checker

About Email Authentication Checker

Check SPF, DKIM, and DMARC DNS records for a domain using DNS-over-HTTPS.

About

Check SPF, DKIM, and DMARC DNS records for a domain using DNS-over-HTTPS.
Check SPF, DKIM, and DMARC DNS records for a domain using DNS-over-HTTPS.
Runs in browser
Yes
No signup required
Yes

Examples

Example usage

Try the tool with sample input.
Input
example.com
Output
Email authentication check for: example.com

✓ SPF: "v=spf1 -all"
✓ DMARC: "v=DMARC1;p=reject;sp=reject;adkim=s;aspf=s"
✓ DKIM: "v=DKIM1; p="...

Use Cases

  • Check email authentication checker values while you draft a page, spreadsheet, or config.
  • Paste a sample into Email Authentication Checker and copy the output into your workflow.
  • Keep sensitive inputs on-device — this page runs the calculation in the browser.

Frequently Asked Questions

Related Tools

Related tools: