Important for Outlook users to know
How to open an email message on Mac | .msg and .eml
There are thousands of different file types, divided into categories such as music or document files, but each with their own function and limitations. For example, an MP3 file may be great for audio, but an AAC file is even better. One format that has no real competition, however, is the .MSG file format.
If you see an .MSG file, you're probably using Microsoft Outlook, since Outlook uses MSG files to export emails and other tasks. If you don't have Outlook on Windows, or if you're using Outlook on Mac, you might not be able to open it. Here's how to open an MSG file on Windows or Mac.
The MSG file format is specific to Microsoft Outlook, which uses MSG files to export various types of content outside of Outlook itself. Most commonly, MSG files contain email messages received from other users, but they can also contain calendar appointments, tasks, and other Outlook items.
