Try KDETools Zimbra to Office 365 Migration Tool is the most efficient tool for migrate Zimbra to Office 365 and other several file formats such as PST, MBOX, PDF, EML, EMLX, HTML, etc. This application supports batch conversion at once. You can simply set off this software in all versions of Windows such as 7, 8 and 8.1, XP, 10 and so on.
