Try KDETools Zimbra to Exchange Server Migration Tool is the most capable tool to migrate Zimbra to Exchange Server.
Some extra features are:
• This tool converts numerous file formats such as PST, OLM, NSF, MBOX, PDF, EML, EMLX, HTML, etc.
• This tool shows free preview of the data before the migration process.
• You can basically set off this tool in all versions of Windows such as 7, 8 and 8.1, XP, 10 and so on.
Read More:
https://www.kdetools.com/zimbra/exchange/
