SysTools MSG Viewer is safe to use. It's one of the safest ways to view MSG files. Msg files are usually associated with Microsoft Outlook and are used to store emails. However, programs like SysTools MSG Viewer can also open these files. MSG Viewer does not require installation or configuration and can be run directly from a USB drive. This makes it an ideal solution for viewing MSG files on any computer without worrying about installers or registry keys. In addition, SysTools MSG Viewer is free and contains no advertising or harmful code. So if you're looking for a safe and easy way to view your MSG files, SysTools MSG Viewer is the perfect solution.