If you want to convert PST emails to PDF, then I want to recommend you use the ConverterTools Outlook PST Converter. This tool is the most efficient and reliable way to move PST mailboxes to a number of file formats, such as PDF, EML, MSG, MBOX, and so on, including all email attachments. Moreover, it has the ability to import Outlook PST emails to multiple email clients, such as Gmail, Yahoo Mail, Opera Mail, and many more, in batches at once. It has the ability to do the PST migration process without installing MS Outlook on your device. This tool works on all Windows OS versions, including the new version of Windows 11.