You can try Zimbra to Gmail Converter tool mainly import Zimbra to Gmail and numerous file formats like PST, MBOX, EML, EMLX, HTML, PDF and etc. This application has many superior features like Fast transfer of data, Corrupted file also transformed strongly, and Meta properties email get transfer etc. This application supports batch conversion at once. You can just set off this application in all versions of Windows such as 7, 8 and 8.1, XP, 10 and so on.