I would like to suggest professional software like KDETools Zimbra to Outlook Converter.
• Zimbra to Outlook converter tool also directly import Zimbra files to Gmail, G Suit, Google Drive and etc.
• Support multiple file formats such as PST, OLM, MBOX, MSG, EML, EMLX, PDF, HTML, etc.
• This application also import Zimbra file to Office 365 mailbox and Exchange server this two format use for online Conversion.
Read More: https://www.kdetools.com/zimbra/
The SameTools TGZ to PST Converter Software makes it simple and accurate to move TGZ data into Outlook PST. The tool makes it simple to export all of the data from TGZ, including emails, contacts, notes, tasks, and calendars, into PST, EML, EMLX, MSG, HTML, MHTML, and MBOX, among other formats. It is a very trustworthy instrument that has undergone extensive testing to offer 100% accurate results. Without any data difficulty, it can convert large files as well. The tool is pretty easy to use and doesn't require any further technical knowledge. The app has to be installed and used. The software is an easy-to-use utility.