How to convert Winmail.dat to PDF

Hello,

This is an erroneous drafting of a message by an Outlook sender, and it may only contain rich text.

We can only read it in a specific format (for example, PDF) if we are certain that the intended format for the attachment was PDF; in that case, just save it as a PDF.

https://osxdaily.com/2016/04/19/open-winmail-dat-file-mac-os-x/