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Free · No signup · 30 seconds

Run our free deliverability diagnostic. We check SPF, DKIM, DMARC, and MX against the same rules Google, Microsoft, and Yahoo enforce.

Also free: Email Header Analyzer Talk to a specialist

Frequently asked questions

Is the email deliverability check free?

Yes. The troubleshooter is completely free and needs no signup. Paste your domain and you get SPF, DKIM, DMARC, and MX results in about 30 seconds.

Why are my emails going to spam?

The most common causes are missing or misconfigured SPF, DKIM, or DMARC records, sending from a server that isn't authorized for your domain. The troubleshooter checks your SPF, DKIM, and DMARC setup so you can fix what's in your control.

How do I check if SPF, DKIM, and DMARC are set up correctly?

Enter your domain into the tool. It validates each authentication record against your live DNS and flags anything missing, misaligned, or left in monitor-only mode.

What does the deliverability check test?

It checks your domain's MX records, SPF (including the 10-lookup limit), DKIM signing on common selectors, your DMARC policy and alignment, plus MTA-STS, TLS-RPT, and BIMI readiness — the configuration that decides whether you reach the inbox.