What is the most effective way to import a PST file from Outlook into Zimbra Desktop? If you're having problems, I propose eSoftTools Outlook PST Recovery Software, which is excellent software. It operates in a very simple and smooth manner. During the conversion, the PST Recovery is given in real-time. This software supports Office365, MBOX, EML, EMLX, MSG, HTML vCard, and a range of other file types. The demo version is available to all users and allows them to convert up to 25 emails per folder.