Suggestion: reader for Outlook formats winmail.dat, .MSG, .XPS

Any Mac Exchange user knows that these Microsoft Outlook attachment formats are unreadable on macOS, even if you have Outlook for Mac:

• winmail.dat
• .MSG files
• .XPS files

Maddening! One can buy a pricey and shady looking hidden-costs app on the App Store to read these, but this feature seems like a natural for Parallels tools, since we are often Windows users as well. Please consider this suggestion!