To convert PST files to PDF format easily I recommend using DataVare PST to PDF Converter. It is designed to export Outlook PST emails into PDF files without losing formatting and attachments. You can convert multiple PST files at once and it keeps all email properties like To, Cc, Bcc, Subject and Date intact. It does not require Outlook to perform the conversion. It is perfect for creating readable, shareable and secure email backups in PDF format. It supports all Windows OS versions such as 11, 10, 8.1, 8, 7, XP and Vista.