I suggest using GainTools MSG Converter if you are looking for the best way to convert MSG to PDF with attachments. With this advance tool, you can export multiple MSG files to PDF without erasing attachments or the structure of the email. It maintains metadata/ formatting/ and hyperlinks while guaranteeing 100% data accuracy. The program is compatible with Outlook versions including 2019/ 2016/ 2013/ and more, and it is made for all versions of Windows. Even nontechnical users can easily navigate its UI.