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CLUSTER EMAIL-FILES-MSG · 8 ENTRIES · EARLIEST ENTRY 2026-07-31

Outlook email file viewers

This cluster comprises tools for opening, converting, and viewing Microsoft Outlook-related email formats (winmail.dat, MSG, EML, XPS) across mobile, desktop, and web platforms. The dated history is too thin to read a shape from, with only three pre-index entries, indicating the cluster predates the index or its members are largely undated. Traction leaders by activity signal are MailViewer, msg-viewer, and outlook-brief, though all currently show zero stars.

Entry timeline

ENTRY TIMELINE

DEC 2010: 1FEB 2026: 1JUL 2026: 1AUG 2026: 1SEP 2026: 4
DEC 2010SEP 2026

Each bar is the month a member carries, which is a creation date where the source published one and a crawl date otherwise. Nothing in the index was found before 11 August 2026, and coverage broadened sharply on 14–15 August, so a bar from then on reports how much we found that month, not how much was built; an earlier bar reports how far back a member's own source dated it — not how long we have been watching.

Members by activity

Activity signals, not revenue.

Build origin · 1 hand-coded · 7 unlabelled

Operator · 2 hobby · 1 indie · 1 commercial · 2 open source · 2 unlabelled

Two labels per entry, never collapsed into one: how it was built, and who stands behind it. Counted over the 8 listed below. Unlabelled means nothing has decided yet — not that the answer is small.

  1. 01Dovecot-Mailbox-Viewer3★22 dayslivehand-codedindieRead-only desktop viewer that opens Dovecot mdbox email backups, lets users search messages, preview HTML emails, and export them as EML files.
  2. 02MailViewer0★1 moliveopen sourceDesktop application that opens and renders EML and MSG email files, including attachments and HTML content, without extra software.
  3. 03msg-viewer0★1 molivehobbyWeb app that opens Outlook MSG files locally in the browser to display email contents and attachments without uploading data.
  4. 04qt-msg-reader-bin0★2 moliveopen sourceDesktop application that opens and displays Microsoft Outlook MSG email files for offline viewing.
  5. 05outlook-brief0★1 mo—Email tool that pulls messages from Outlook web and sends a digest to QQ Mail for users without access to school mail APIs.
  6. 06OpenMSGFilesOnMac0★1 mo—hobbyMac app that opens Outlook .msg email files, shows their content and attachments, and batch-converts them to PDF without requiring Outlook.
  7. 07MBOX Viewer0★3 moliveOffline app for Apple devices that opens, reads, searches, and exports MBOX email archive files.
  8. 08Winmail Viewer - Letter Opener0★15 dayslivecommercialMobile utility that opens and converts Microsoft Outlook winmail.dat, MSG, and XPS attachments into readable formats.

Ranked by traction, highest first, and paged 20 at a time — this is a window on the cluster, never the whole of it. Ties are broken by a stable id so a product cannot appear on two pages or fall between them. Browse every cluster.