Find out why your emails go to spamGet answers in 10 seconds
We check your domain email authentication and tell you what to fix. Free. No signup.
Three steps to fix your email
No technical knowledge required. Takes less than a minute.
Scan
Enter your domain. We check all 4 email authentication protocols via live DNS lookup.
Review
Get a clear 0-100 score with detailed pass/warn/fail status for each protocol.
Fix
Apply recommended DNS changes with one click via Cloudflare. Done in seconds.
Why EmailGuard
Free for small businesses. No signup required.
Real-Time DNS Scan
Queries live DNS records via Google DNS-over-HTTPS. Always accurate, always current.
Provider Detection
Auto-detects Google Workspace, Microsoft 365, Aliyun, Tencent, Zoho, ProtonMail and more.
One-Click Cloudflare Fix
Connect your Cloudflare account and apply all DNS changes with a single click.
Actionable Reports
Every issue comes with a fix instruction. Copy-paste the exact DNS record to add.
Multi-Protocol Check
Simultaneously checks MX, SPF, DKIM and DMARC. No need for multiple tools.
Free Forever
No credit card. No signup. Free for unlimited domain checks.
Free Tools
Use our focused checkers or go straight to the full scan.
Fix your email delivery
Check any domain. 10 seconds. Free. No signup needed.