MxToolBox
vs
WHOISJSON
MxToolBox vs WHOISJSON
Domain API comparison
Overview
Which of these two providers fits my workload?
MxToolBox
Email security & DNS diagnostic tools
MxToolBox specializes in email deliverability tools including MX lookups, blacklist monitoring, SPF/DKIM/DMARC validation, and DNS diagnostics.
Free weekly blacklist monitoring for one domainWHOISJSON
WHOIS, DNS, SSL, and availability API with a free plan
WHOISJSON packages WHOIS, DNS, SSL certificate, and availability lookups into one API.
1,000 requests/month, no card requiredPricing comparison
Watch out for: Credits, pages, requests, records, compute units, subscriptions, and browser-time blocks are not interchangeable.
| Pricing | MxToolBox | WHOISJSON |
|---|---|---|
| Free tier | Free weekly blacklist monitoring for one domain | 1,000 requests/month, no card required |
| Paid plans | $129/month Delivery Center | $10/month for 30,000 requests |
| Enterprise | $399/month Delivery Center Plus | $600/month Atlas plan; higher volume custom |
| How usage is billed | Credits, pages, requests, records, compute units, subscriptions, and browser-time blocks are not interchangeable. | Credits, pages, requests, records, compute units, subscriptions, and browser-time blocks are not interchangeable. |
Feature comparison
| Feature | MxToolBox | WHOISJSON |
|---|---|---|
| Free tier | Limited | Included |
| API access | Included | Included |
| Bulk operations | Included | Limited |
| Real-time data | Included | Included |
| WHOIS data | Not included | Included |
| DNS lookup | Included | Included |
| Domain valuation | Not included | Not included |
| Brand monitoring | Included | Not included |
| MCP/AI integration | Not included | Not included |
Which is better?
Choose MxToolBox if you need
- Focused email deliverability diagnostics
- Blacklist monitoring
- SPF/DKIM/DMARC validation
Choose WHOISJSON if you need
- Covers WHOIS, DNS, SSL, and availability in one API
- Free plan with 1,000 requests a month, no card required
Consider DomScan instead
DomScan combines broad features with developer-friendly pricing.
- ✓ Free tier: 10,000 credits/month (no credit card)
- ✓ 1,100+ TLDs supported
- ✓ MCP integration for AI assistants
- ✓ Domain valuation, brand monitoring, OSINT
Sources
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