No, the tool only view & open DMG file in Windows 7/8/10 which gives the facility to preview HTML files within the tool. In order to save you can go for DMG Viewer Pro.
Overview Features of DMG Viewer Tool
Yes, the DMG viewer software supports to preview the attachments of EML file within DMG File. Go to the preview window by double clicking on the file . Then double click the attachments within the mail & you can preview the attachments.
The tool provides you with facility to search files using, Text as well as File type .You can simply select the folders & search "EML" file to enlist all the EML files within the selected folders.
This DMG file Viewer program supports all versions of Windows OS & helps to read & open Mac OS X DMG file in Windows 10, 8 and all the below versions
In single running instance of the tool, the software allows adding single DMG files. You can add multiple DMG files by selecting "Open Tab" to Add DMG files one by one.