Mailfossil: Archive Lab

About Mailfossil: Archive Lab

Mailfossil: Archive Lab is a focused, fully on-device app. An offline MBOX and EML archive explorer for MIME structure, attachments, threads, dates, participants, duplicates, search, redaction planning, and evidence export.

KEY FEATURES
- Stream large MBOX files without uploading messages
- Inspect MIME trees, encodings, attachments, and headers
- Reconstruct threads and participant timelines
- Find exact and near-duplicate messages
- Export selected metadata or redaction worksheets
- Complete bundled sample and local comparison workflow
- Local PDF report and Apple system share export
- Original offline technical reference library

ONE-TIME AND PRIVATE
- One paid download; no subscription or in-app purchase
- No account, advertising, analytics, tracking, or developer-operated backend
- Core features and bundled content work offline
- Work remains on device unless you deliberately share or export it through an Apple system interface

Archive inspection aid. Headers can be forged and threading is heuristic; preserve originals and follow legal, privacy, retention, and evidentiary requirements.