How Can I Save Thunderbird Emails as PDF Files?

I am using Mozilla Thunderbird for managing my emails, and I need to save some important emails as PDF files for documentation and legal purposes. I tried printing emails directly, but it becomes difficult when I have multiple emails and attachments. Is there any safe and reliable method or tool to convert Thunderbird emails into PDF format while keeping the original formatting, attachments, and email metadata intact? Please suggest a practical solution that works for both individual and bulk email conversion.