The Mac OST to PST Converter makes it easy to convert one or more OST files into Outlook PST format. This tool allows you to quickly save large amounts of data in bulk. You can use it to convert Outlook OST files to PST, with or without attachments. It lets you open your OST file without needing Outlook installed. The tool can also convert OST files to other formats like MBOX, MSG, EML, PDF, EMLX, and CSV, including emails, attachments, contacts, and more. Additionally, the software works with all versions of Mac. It supports OST files from Outlook 365, 2019, 2016, 2013, 2010, and older versions. Now, let’s follow simple steps to easily convert OST to PST without Outlook.