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Free private report analyzer

Open a DMARC report without sending it anywhere.

Turn aggregate XML into understandable alignment, disposition, source, and policy evidence. The report stays on your device from upload to CSV export.

  • Local by design

    The report is parsed inside an isolated browser worker and never uploaded.

  • Defensive limits

    Compressed size, expansion ratio, XML depth, elements, records, and totals are bounded.

  • Reconciled evidence

    Source, disposition, alignment, pass, and fail totals must agree before results appear.

Choose a DMARC aggregate report

XML, GZIP, and single-report ZIP are parsed in an isolated Web Worker. Nothing is uploaded, stored, or sent to a MailDNS API. Limits: 5.0 MB compressed, 20.0 MB expanded, bounded records and decompression ratio.

Local-only processing

Usually attached to an aggregate report email with an .xml or .xml.gz filename. Analyze one report at a time.