A simple email viewer for opening .msg and .eml mail files.Opens .msg files created by Outlook and other applications, or .eml files created by Lotus Notes, Groupwise, Thunderbird, Outlook Express, Windows Mail.MessageViewer Lite can be set as the Windows default app to open email files. Just click on the file and it will open. Access email file attachments, and save to a folder. Print emails. View email internet header information.