All Tools

Run SPF, DKIM, DMARC, MX, and delegation checks at once and get an overall health score

Look up mail exchange records and verify mail server configuration

Validate SPF records, check lookup limits, and trace include chains

Validate DKIM keys, check key strength, and verify selector configuration

Analyze DMARC policies, alignment settings, and reporting configuration

Upload and analyze DMARC aggregate XML reports in your browser. Visualize sources, pass/fail rates, and alignment — nothing leaves your device.

Check MTA-STS policy, mode, and max-age to verify enforced TLS for inbound email delivery

Check if an IP or domain's mail servers are listed on email blacklists

Parse email headers to trace delivery path, check authentication, and diagnose issues

Build a valid SPF record with our service catalog, validate DNS lookups, and generate a copy-paste-ready record

Build a DMARC record with guided deployment stages, policy selection, reporting configuration, and alignment settings

Test SMTP connectivity, STARTTLS support, and TLS certificates on ports 25, 465, and 587

Test IMAP connectivity, STARTTLS support, and TLS certificates on ports 143 and 993

Look up all DNS record types for a domain: A, AAAA, CNAME, MX, NS, TXT, and SOA

Reverse DNS lookup — find the hostname for an IP address

Validate DNSSEC chain of trust, DS records, and RRSIG expiry

Check domain registration expiration date and renewal status via RDAP

Verify DNS delegation chain, nameserver health, and SOA consistency

Test connectivity and measure latency to a host

Trace the network path to a destination host

Show your public IP address as seen by our servers

Look up the geographic location and network information for an IP address