Yes, you can convert multiple EMLX files into a single PST file. Tools like SysInfo EMLX Converter allow you to add multiple EMLX files or folders at once and merge them into one Outlook PST file. The process preserves email content, attachments, metadata, and folder structure, making it easy to access all your Apple Mail emails in a single Outlook data file. more: https://www.sysinfotools.com/emlx-converter.php