In order to import your Windows Outlook data to Outlook for Mac, you need to convert the OST file to a PST file on a Windows computer. Outlook for Mac can only import data from a PST file and it cannot recognize a OST file. Unlike Outlook for Windows, which stores the Outlook data in PST or OST files, Outlook for Mac stores the indices in a proprietary Database file and stores the data records as a series of files nested within folders. No, the OST files cannot be moved or transferred or imported on Outlook for Mac. How to use the OST file on Outlook for Mac?
