Email diagnostics
Test your sending setup with a real email.
Send a test message and see how SPF, DKIM, and DMARC authenticate and align, with
explanations of anything that needs attention.
Instant visibility
See exactly why authentication passes or fails.
See how your current sending setup behaves using the authentication results carried by a real message.
- Check SPF and DKIM results and alignment.
- Confirm whether the message passes DMARC.
- Keep completed diagnoses listed in the dashboard for your team.
Test the email your systems actually send.
Start a diagnosis and send an empty message from your domain or a subdomain to the address provided by DMARCwise. We inspect the message to check SPF, DKIM, and DMARC authentication and alignment.
Just need a quick public check?
Use the public checker for a lightweight SPF, DKIM, and DMARC test without signing in. For regular use, dashboard diagnostics provide more detail and keep the results available to your team.
Try DMARCwise
Take control of email authentication and delivery.
- Understand what your DMARC, SPF, DKIM, and SMTP TLS data means.
- Fix issues and enforce policies without disrupting legitimate senders.
- Continue monitoring as your domains and sending infrastructure change.
Free plan and 14-day trial available.
Have questions? Contact us or browse the documentation.