| Feature | Semrush | Dedicated Email Checker (e.g., NeverBounce, ZeroBounce) | |--------|---------|----------------------------------------------------------| | Real-time SMTP check | ❌ No | ✅ Yes | | Detects catch-all domains | ❌ No | ✅ Yes | | Role-based email detection (info@, sales@) | ❌ No | ✅ Yes | | Free to use | ❌ Requires paid Semrush plan (starting ~$129/month) | ✅ Often has pay-as-you-go or free trials | | Bulk checking | ✅ Yes (with limits) | ✅ Yes |