If you want to import Zimbra to Exchange server then you can use KDETools Zimbra to Exchange server Converter tool. This software has many advance features such as:
• Import Zimbra to Exchange server account and other file formats such as PST, MBOX, EML, EMLX, HTML, PDF, etc.
• It is easy to import Zimbra files into Exchange server without losing data when using this commercial application.
• This tool directly import Zimbra to Gmail, G Suite, and Google Drive etc.
• This software easily connects Zimbra to Office 365 and Exchange Server account.
Read More:
https://www.kdetools.com/zimbra/exchange/