Select the items you want to include in the zip file.Popular mail files on Mac OS including EML, EMLX, Images can be Read using this DMG Viewer utility. This tool supports to view DMG File of both Read-Only & Compressed Type. The DMG viewer software open & read Mac DMG file emails on all Windows Operating System.Firefox 3 requires Mac OS X 10.4 or above.
Another option is TenFourMac, which is based on Mozilla 2.0 and Firefox 4 code.