Try KDETools Zimbra to Gmail Converter Tool is the most capable tool to migrate Zimbra to Gmail
Some extra features are:
• It is the safe and secure application which can effectively migrate Zimbra file to Gmail account without any data loss.
• This software migrate Zimbra to numerous file formats such as PST, OLM, NSF, MBOX, PDF, EML, EMLX, HTML, etc.
• This tool also support direct migrate of Zimbra to Gmail account.
Read More:
https://www.kdetools.com/zimbra/gmail/
