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Available on winget

Install InLook

Fast, free .eml email viewer

Install with winget
winget install --id StruisICT.InLook
Upgrade
winget upgrade --id StruisICT.InLook
Uninstall
winget uninstall --id StruisICT.InLook

About InLook

InLook is a small, fast viewer for .eml email files (the standard RFC 822 / MIME format used by Outlook, Thunderbird, and most other mail clients when saving a single message to disk). It renders headers, body (HTML or plain text), and attachments, with embedded HTML sandboxed under a strict Content Security Policy — no remote loads, no tracking pixels. Follows the system light/dark theme, registers as the default .eml handler, and never touches the network. Free Software from Struis ICT.

What's new in 1.0.0

1.0.0 (2026-07-21) Features - 'Check for updates' menu item + raise file limit to 5 GiB (#67) (68237ec) - macos: Developer ID signing + notarization pipeline (gated) (#58) (05d2afd) - remove the automatic 'make InLook your default app' popup (#61) (2ccb51b) - welcome screen (drag-drop + browse) and About menu with Buy Me a Coffee (#66) (ae1107e) Bug Fixes - render large/image-heavy emails via a custom protocol (bypass NavigateToString 2 MB cap) (#60) (70794ab) - windows: give each process its own WebView2 data folder (0x800700AA) (#69) (bbf7cca) - windows: show the app icon in the window title bar and taskbar (#68) (44e4165) Miscellaneous Chores - prepare 1.0.0 (#71) (0102a85)

Read release notes

Version history

Version Updated Notes
1.0.0 Unknown 1.0.0 (2026-07-21) Features - 'Check for updates' menu item + raise file limit to 5 GiB (#67) (68237ec) - macos: Developer ID signing + notarization pipeline (gated) (#58) (05d2afd) - remove the automatic 'make InLook yo...
0.9.0 Unknown 0.9.0 (2026-07-17) Features - opt-in update notification (Windows), off by default (#52) (d12597b) Bug Fixes - wix: drop duplicate .oft verb that broke the MSI build (#54) (60bec90)
0.7.0 Unknown 0.7.0 (2026-07-14) Features - default .eml-app prompt, WebView2 data-folder fix, and new icon (#43) (ac6d904)
0.6.0 Unknown 0.6.0 (2026-07-10) Features - ci: auto-update package manifests on release + flatpak build check (#27) (f901828) - rebrand to StruisICT org — static CRT, embedded icon metadata, signed releases (#30) (6f41517) - windows:...
0.5.0 Unknown - Bundle app icon and auto-generate macOS .icns - Follow system dark/light theme - Fix MSI ProductVersion drift (was reporting 0.1.0 in Add/Remove Programs) - Update help URL to canonical struisict.com