The Zimbra to PST Converter tool is a cost-free option if you want to move Zimbra files to PST without losing any data.

• Throughout the migration process, the folder structure is preserved by Zimbra to PST Converter.
• Multiple file formats, including MBOX, MSG, EML, EMLX, PDF, OLM, HTML, and others, are supported by this software.
• This application supports batch conversion.
• To, Bcc, Cc, Sent, From, Received, Attachments, and other essential mail data are extracted by this application.

More Details:  http://www.zimbra-converter.com/