What's the best way to archive Office 365 emails as PDF?

Hi everyone,

I need to archive a large number of Office 365 emails as PDF files for backup and documentation. I've looked at Outlook's print option, but it seems too time-consuming for bulk emails.

While searching online, I came across the Advik Office 365 Backup Took, which claims to export Office 365 emails directly to PDF. Has anyone here used it? Is it reliable, or is there a better way to archive emails while keeping attachments and formatting intact?