To transfer MBOX files to Microsoft Outlook, first export your emails from the source client in MBOX format. Use a reliable MBOX to PST converter tool to convert the MBOX files into Outlook-compatible PST format. After conversion, open Outlook and import the PST file to access all your emails, contacts, and attachments seamlessly. You can convert MBOX files to MS Outlook file format (PST) using reliable conversion tools. First, export your emails from MBOX-supported clients like Thunderbird. Then, use a trusted MBOX to PST converter to import the MBOX files and save them in Outlook-compatible PST format. This ensures all emails, attachments, and folder structures are preserved.