There's a wealth of info in the 100+ extra columns available on a server's MS Explorer. For instance, on an email file generated by PX+, there's addresses & subject. Unfortunately, given the nature of the beast, sorting and/or filtering just doesn't work (often too many files). Is there a way to pull in that extended (directory? file?) info from the Fin/Fid/Whatever?
The extra information that Explorer shows generally comes from reading the physical file. It extracts various pieces of information based on file type. Attributes such as address and subject are simply being determined based on the contents of the file and are not truly physical file attributes.
Explorer uses the file suffix and contents to determine how to extract the information based on known file types.
You could replicate that functionality however that would require to know how to parse each of the file types you encounter.