Fast, free utilities for email and domain intelligence
Tools for developers, marketers and IT teams, running on the same engines behind our production lead-generation platform. No sign-up required.
- No sign-up required
- Instant results
- Built on production engines
Three utilities, zero paywalls
Each tool answers one question well. Is this email real, how old is this domain, and what does its DNS actually say.
Email Validator
Verify any email address instantly. Check syntax, DNS records, and SMTP mailbox existence to ensure deliverability before sending.
Domain Age Checker
Find out when a domain was registered, its age, expiry date, registrar, and nameservers. Essential for SEO and due diligence.
DNS Lookup
Query A, MX, NS, TXT, SPF, and DMARC records for any domain. Diagnose email deliverability and DNS configuration issues.
Not toys. Production infrastructure with a free front door
These tools query live registries and authoritative DNS through the same Go services we run for our own systems.
- Email checks run three layers: RFC 5322 syntax, DNS/MX lookup, and mailbox verification
- Domain data comes from live RDAP/WHOIS registry queries, not stale caches
- DNS answers cover A, AAAA, MX, NS, TXT, CNAME, and SOA records
- The same Go engines power our production lead-generation platform
What the toolkit covers
Need custom tools?
We build custom automation tools, APIs and integrations around how your business actually runs. Let's talk through what you need.