Free Tool

Domain deliverability health check

Scan your sending domain for authentication gaps, DNS errors, and reputation issues. Get a scored report with fix priorities.

Deep analysis mode: Performs live DNS queries for accurate real-time results

What It Does

Run a complete domain health audit in seconds. Our scanner checks 50+ deliverability factors including SPF/DKIM/DMARC authentication, blacklist presence, MX configuration, and DNS health. You get a 0-100 score plus a priority-ranked fix list.

Every check is logged so you can track improvements over time.

Why It Matters

Inbox placement = revenue. If your authentication is broken or you're blacklisted, your emails vanish into spam—wasting leads and burning sender reputation.

Most teams don't discover these issues until campaigns already failed. This scanner catches problems early, before they cost you deals.

Key Features

Instant scoring: 0-100 deliverability grade
Full authentication audit (SPF + DKIM + DMARC)
Real-time blacklist checks across major DNSBLs
MX record validation with provider identification
Risk-level flagging (Critical, Warning, Pass)
Downloadable PDF report
Fix recommendations ranked by impact

How To Use

  1. 1Input your sending domain
  2. 2Run the health scan (takes ~10 seconds)
  3. 3Review your 0-100 deliverability score
  4. 4Check each category: Authentication, Blacklists, DNS
  5. 5Start with "Critical" fixes first
  6. 6Re-scan to verify improvements

Common Issues Detected

  • Authentication failures (missing SPF, broken DKIM, no DMARC)
  • Blacklist appearances on major RBLs
  • DNS misconfigurations slowing delivery
  • Overly permissive SPF policies
  • DMARC policies set to "none" (monitoring only)
  • MX records pointing to wrong servers

Best Practices

  • Scan before launching any new domain
  • Re-check weekly during active campaigns
  • Fix critical issues within 24 hours
  • Target 90+ score before scaling volume
  • Save reports to track monthly progress
  • Scan after changing email providers