Quickly Validate Your DomainKeys,
DKIM, and SPF Signatures

Ensure your emails genuinely comply with authentication standards 
and successfully avoid spam filters.

Just 2 steps

How the DKIM Validator Works

No complicated Test ID required — simply send and get results immediately.

Step 1. Send your email directly to our testing inbox

Step 2. Instantly receive a detailed analysis report

What’s Included in Your Email
Authentication Report?

DKIM Signature Validation

Confirm your email's DKIM signatures actually pass inbox checks

SPF Authentication Test

Verify your sender IP addresses genuinely match authorized records

MailCracker's advanced DKIM validator instantly verifies if your emails
actually pass DKIM, SPF, and DomainKeys authentication checks —
not just DNS record configurations.

Why Check Email Authentication Before Sending?

Avoid the Spam Folder

Proven email signatures directly improve inbox placement

Protect Sender Reputation

Prevent reputation damage caused by failed authentications

Enhance Email Performance

Quickly correct authentication issues before they harm email results

Go Beyond Validation –
Boost Your Email Results

For complete deliverability assurance:

📨

Run an Email Deliverability Test
to analyze inbox placement accurately

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Use our advanced Spam Checker
to optimize your email content proactively