If you are searching for helpful tool to import Zimbra file to Outlook, then you can use Zimbra to Outlook PST Converter.
Features are:
• This tool import Zimbra file to Outlook PST and additional file format such as MBOX, EML, EMLX, HTML, PDF and etc.
• This tool also import Zimbra file to Gmail, G Suit, Google Drive and etc.
• This tool securely import Corrupted file.
Read More: https://www.kdetools.com/zimbra/