Free email and DNS tools
Check an address or a domain without signing up. Every tool reads the same public records the SignupScore API does.
Available tools
- Disposable email checker
Detect disposable addresses and other risky signup signals.
- Deliverability test
Review the DNS records that affect email delivery.
- SPF, DKIM & DMARC
Inspect email authentication records.
- BIMI checker
Check the record behind the logo and blue checkmark in Gmail.
- Email header analyzer
Trace message routing and authentication results.
- Blacklist checker
Check domain and IPv4 addresses against common DNSBLs.
- MX lookup
Inspect mail servers, priorities, and TTL values.
- DNS lookup
Query common DNS record types for a domain.