MSG Viewer for Outlook
MSG Viewer for Outlook is a utility for macOS that lets users open and read MSG files — the email message format used by Microsoft Outlook for Windows. It is commonly needed by Mac users who receive MSG files from Windows colleagues, need to access archived Outlook emails, or are migrating from Windows to macOS. The free version of the app provides basic viewing of MSG file contents, while the paid version and in-app purchases unlock features like bulk conversion and the ability to export messages to formats compatible with macOS email clients. The app is available both on the Mac App Store and as a direct purchase from the vendor's website.
AI Recommendation
1 suggestionWe could not find evidence that MSG Viewer for Outlook has been updated with a native Apple Silicon build. The search results we gathered mention the app is available on the Mac App Store and the vendor's website, but do not specify the architecture — no changelog, release notes or vendor statement confirms native support. If you currently use this utility and rely on it, contact the developer to ask whether a native Apple Silicon version is planned before macOS 28 removes Rosetta 2 support in September 2028. In the meantime, the Intel build will continue to run under Rosetta 2 on M-series Macs. As a fallback, the Outlook Web App (accessed via your browser at outlook.com or your organisation's Exchange instance) has a built-in MSG viewer and requires no separate software — you can forward MSG files to yourself and open them directly. SeaMonkey, an open-source suite that includes email capabilities, is another free option on Mac, though it requires more manual setup.
Recommended reading
What happens to your Intel apps in macOS 28