On Mac systems, Outlook does not provide a direct option to export PST files to CSV. A common approach is to first import the PST into Outlook for Windows, then export the mailbox data as a CSV file via File > Open & Export > Import/Export > Export to a file. Alternatively, you can configure the same email account on Outlook for Mac, allow synchronization, and then export contacts directly from the Mac version as CSV using the Contacts export feature. Third-party conversion tools can also convert PST to CSV without Windows. After conversion, open the CSV in Excel to verify data and formatting before using it in other applications. This ensures compatibility across systems and apps reliably and safely.