MSG Viewer for Outlook
MSG Viewer for Outlook is a utility for macOS that opens and previews MSG files—the native Outlook message format used by Microsoft Outlook for Windows. Users encounter MSG files when working across Windows and Mac environments: receiving MSG attachments from colleagues, accessing archived emails from a Windows PC, or managing data shared on office networks. The app lets users view the contents of MSG files on a Mac without needing Outlook for Windows or Windows itself, and the paid version allows conversion to other email formats for use in Mail, Outlook for Mac, or other email clients. It is available both as a paid download from the vendor website and as a free download with in-app purchases via the Mac App Store.
AI Recommendation
1 suggestionWe could not find evidence that a native Apple Silicon build of MSG Viewer for Outlook currently exists. The vendor appears to be actively maintaining the app—it is available on the Mac App Store and has a dedicated product website—but no public announcement or documentation about Apple Silicon support has surfaced in the search results. Since the app is still being developed and updated, contact the vendor directly to ask whether a native build is planned before macOS 28 arrives in September 2028. In the meantime, the Intel version continues to work under Rosetta 2. If you need an immediate alternative, both Klammer (available on the Mac App Store) and Mozilla SeaMonkey (free, open-source) can also open and convert MSG files on a Mac, though their feature sets differ—SeaMonkey in particular is older and less polished, but it is free and runs on both Intel and Apple Silicon.
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