If you want to know how to import PST into Outlook, you can easily do it using the built-in Import/Export option in Microsoft Outlook. First, open Outlook and go to File > Open & Export > Import/Export. Then choose Import from another program or file, select Outlook Data File (.pst), and browse the PST file from your computer. After that, select the destination folder and click Finish. Outlook will start importing all emails, contacts, and other mailbox data from the PST file into your account.