If you were using Outlook in Cached Exchange Mode before the server crashed, you might be able to access your OST file without connecting to the Exchange Server. Open Outlook and check if you can access your mailbox data. If cached data is available, you should be able to view your emails, contacts, and other items. If you can't access your data using Cached Exchange Mode, you can use the Mailvita OST to PST Converter tool to convert OST files to PST format. Users can easily view and open your OST files in Outlook PST file format. You can also recover your corrupted OST files. This software exports OST files such as emails, attachments, tasks, notes, journals, events, etc. It supports all Mac OS versions, like 13 "Ventura," 12 "Monterey," 11 "Big Sur," 10.15 "Catalina," 10.14 "Mojave," 10.13 "High Sierra," and 10.12 "Sierra." It also supports all Windows OS and MS Outlook versions of the tool. A free demo version of the application is available.