From Sperry Software:
Save As PDF for Outlook saves emails and their attachments as a single PDF file. It is useful for case or project backups, legal discovery, and more. It saves each email into its own PDF file. It integrates directly into Outlook for easy access, saves an email plus all its attachments to a single PDF file, runs automatically in the background or catch up quick with manual mode, monitors multiple folders for incoming email attachments at the same time, and allows for automatic renaming or overwriting of PDF files.