If you import Zimbra file to Exchange server account you can use any specialized tool like KDETools Zimbra to Exchange server Converter tool.
Features are:
• 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.
• Also this software shows a free preview of data before conversion.
Read More:
https://www.kdetools.com/zimbra/exchange/
