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Email header analyzer

Paste a raw email (headers are enough — body is ignored). The Received chain is parsed into a hop-by-hop trace; SPF, DKIM and DMARC verdicts are surfaced from Authentication-Results, and a live SPF check runs against the source IP. Press ⌘/Ctrl ⏎ to submit.

deepdig — network diagnostics

deepdig is a self-hostable, streaming network diagnostics toolbox: DNS, SSL/TLS, WHOIS, mail authentication (SPF/DKIM/DMARC/MTA-STS), HTTP headers, mail blacklists, IP info, and email-header analysis. The UI is a Vue SPA — if JavaScript is disabled, hit the JSON+SSE API directly:

curl -X POST https://deepdig.dev/api/v1/dns/check \
  -H 'Content-Type: application/json' \
  -d '{"domain":"example.com"}'
# returns { "session_id": "...", "sse_url": "/api/v1/dns/stream/..." }

curl -N https://deepdig.dev/api/v1/dns/stream/{session_id}

Full API in OpenAPI 3.1. Source: github.com/softplexity/deepdig.