DMARC Lighthouse icon
DMARC Lighthouse icon

DMARC Lighthouse

Desktop app for fetching, importing, and analyzing DMARC aggregate and forensic reports. IMAP mailbox or local files ? KPIs, alignment charts, and detail tables.

DMARC Lighthouse screenshot 1

Cost / License

  • Free
  • Open Source (MIT)

Platforms

  • Windows
  • Mac
  • Linux
DMARC Lighthouse screenshot 1
DMARC Lighthouse screenshot 2
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What is DMARC Lighthouse?

DMARC aggregate reports (RUA) and failure reports (RUF) often land in a dedicated mailbox and are hard to read. DMARC Lighthouse fetches these emails via IMAP (or via file import), parses them locally, and shows at a glance:

how many messages passed or failed, and which dispositions (none / quarantine / reject) were applied whether DMARC, SPF, and DKIM alignment hold which sources (IPs), From domains, and reporting organizations stand out how volume and pass rate evolve over time optional alerts for rising failures, a low pass rate, or newly seen source IPs forensic / RUF failure reports as a sanitized table (headers only — no message bodies)

Everything runs locally on your machine: credentials and OAuth tokens stay in the Electron userData folder, encrypted with safeStorage. Report caches use SQLite. There is no cloud account and no telemetry. The UI is available in German and English.