How to import Zimbra to Gmail account
You can try professional like KDETools Zimbra to Gmail Converter tool to import Zimbra to Gmail account. With this tool, you can also import Zimbra to Gmail and another file formats PST, MSG, EML, HTML and PDF file format without any problem. The tool makes it easy for the user to import Zimbra to Gmail without any data loss and security issues.
Read more: https://www.kdetools.com/zimbra/gmail/