Free Tool
DNS Email Health Checker
Check SPF, DKIM, DMARC, and MX records to ensure your emails land in the inbox — not the spam folder.
SPF
Sender Policy Framework
DKIM
DomainKeys Identified Mail
DMARC
Domain-based Auth & Policy
MX
Mail Exchanger Records
Enter a domain (e.g. example.com) — we'll parse the domain from any URL
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Shipcheck
Run a full Shipcheck audit before going live.
Shipcheck checks DNS, SPF, DMARC, and 40+ other signals automatically — and alerts your team if a change breaks email deliverability.
No credit card required
FAQ
Frequently asked questions
What is SPF and why do I need it?
What is DKIM?
What is DMARC and what policy should I use?
Why are MX records important?
My emails are going to spam. What should I check first?