Clear answers for better email

How does your email measure up?

Check authentication, headers, content, IP blacklists, and DANE.

Free email testingNo daily test limit
Preparing your test address…
Results appear automatically when your email arrives.

No account needed. Keep this page open to see your results.

Public DNS checks

Check your SPF & DMARC records

Enter a domain to check its published email policies. No account or test email needed.

Free for everyone

SPF test

See which servers your domain authorizes to send email.

Checks the SPF record and common configuration issues.

DMARC test

See how your domain asks receivers to handle unauthenticated email.

Checks the published policy, alignment settings, and reporting.

DNS lookups use Google Public DNS through Mailtest.info. These checks review published records; use the email test above to check authentication on an actual message. DNS changes may take time to appear.

DNS tools

DNS record splitter

Split long TXT values into 255-byte parts

One TXT record. Several text parts.

In your browser only

Paste one value without outer quotes or a hostname. Maximum 64,000 UTF-8 bytes.

Keep all parts in a single TXT record. Spaces and other characters are preserved.

Paste a TXT value to start.

Value bytes
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Parts
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Largest part
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Record bytes
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This tool doesn’t validate DKIM keys or publish DNS changes. Don’t create multiple SPF records from the parts.