About MXHelper
A free DNS and email diagnostic tool that explains what's wrong with your domain in plain English — and tells you exactly how to fix it at your specific provider.
Why this exists
Most DNS diagnostic tools are excellent if you already know what SPF, DKIM, and DMARC mean. If you don't, they hand you a wall of jargon and leave you to figure out the rest.
MXHelper takes the same diagnostic data and translates it. Instead of "v=DMARC1; p=none; rua=mailto:... not found," you get "Your domain has no DMARC policy, which makes it easier for spammers to spoof your email address — here's the exact record to add, and step-by-step instructions for your DNS provider."
What it checks
- Email authentication: SPF, DKIM, DMARC
- Mail routing: MX records, auto-detected mail provider (Google Workspace, Microsoft 365, Zoho, etc.)
- General DNS health: A, AAAA, NS, TXT records
- DNS provider detection: so fix instructions are tailored to Cloudflare, GoDaddy, Namecheap, or wherever your records actually live
Everything runs in real time against live DNS — no cached or stale data.
Free, forever
MXHelper has no signup, no paywall, no "premium" tier hidden behind features that should be free. The site is supported by unobtrusive ads. If you find it useful, the most helpful thing you can do is share it with someone else who's been struggling with email deliverability.
What's next
The tool will keep getting better at the parts that matter: more provider-specific fix instructions, smarter scoring, monitoring (so you get notified when something breaks instead of finding out from a customer), and educational content explaining the underlying concepts. If there's a feature you'd find useful, send me a note — I read every message.
Get in touch
Feedback, feature requests, bug reports, or just a hello: [email protected]