.pst files are not exactly the best method for backing up email. If you have them on a local machine, then you run the risk of losing data when your drive dies / user deletes something. Not to mention they're proprietary, though there's lots of tools available for them
If you're storing them on a network drive, then you have storage capacity already no? You can always add more storage to your Zimbra server, it supports more than one volume for your mailstore location.
Zimbra can also export mail folders using the REST interface. It will even zip them up for you.
http://mail.domain.com/zimbra/user/<username>/Inbox.zip
That will export them in a standards-compliant format, unlike Outlook. |