If you want to convert PST files to EML in macOS system, then try MacArmy PST Converter for Mac software that is the outstanding and simplest solution for this conversion process. It gives the dual button options i.e. Add File(s) or Add Folder to select the needed PST files effectively. It works on all editions of Mac OS i.e. Yosemite, Big Sur, High Sierra, EI Capitan, and more. It also gives the checkbox options to select or deselect the wanted PST files before conversion. This software has a simple GUI interface that helps to easily convert multiple PST files to various output options i.e. Office 365, MSG, CSV, HTML, MBOX, etc. Additionally, it provides the demo edition that permits to convert first 25 PST files/folder free of cost.