Korpo.pro vs MXToolbox
Free, no-ads email deliverability checker — how we compare
| Feature | Korpo.pro | MXToolbox |
|---|---|---|
| MX Lookup | ✅ Free | ✅ Free |
| SPF Checker | ✅ Free | ✅ Free |
| DKIM Validator | ✅ Free | ✅ Free |
| DMARC Check | ✅ Free | ✅ Free |
| Blacklist Check | ✅ Free (5 sources) | ✅ Free (100+ sources) |
| No Ads | ✅ ZERO ads | ❌ Multiple ads |
| No Signup Required | ✅ Instant use | ✅ No signup |
| DNS Lookup | ✅ Free | ✅ Free |
| Reverse DNS | ✅ Free | ⚠️ Limited |
| SSL Checker | ✅ Free | ❌ N/A |
| WHOIS | ✅ Free | ✅ Free |
| Meta Tag Analyzer | ✅ Free | ❌ N/A |
| SEO Analyzer | ✅ Free | ❌ N/A |
| URL Encoder/Decoder | ✅ Free | ❌ N/A |
| JSON Formatter | ✅ Free | ❌ N/A |
| Base64 Encoder/Decoder | ✅ Free | ❌ N/A |
| IP Info | ✅ Free | ❌ N/A |
| API Access | ✅ Starting €3/mo | ⚠️ Enterprise only |
| Price | FREE | Free + ads |
Why Choose Korpo.pro?
MXToolbox is great for deep diagnostics, but it's loaded with ads and pushes enterprise upsells. Korpo.pro gives you 15 free tools — zero ads, zero signup. Just fast, clean results.