ldms_client currently stores email information like this:
"Computer"."Email"."PST Files".$name_of_file."File Location" = location
"Computer"."Email"."PST Files".$name_of_file."File Size" = size
"Computer"."Email"."PST Files"."Total File Size" = size.
That makes it easy to do a query for "systems where there is lots of PST file space taken up", which would be something like "Computer"."Email"."PST Files"."Total Disk Size" > 1000 MB.
It is however impossible to query "a list of all PST files and their sizes and locations."
Are there many people who want that sort of a listing? Changing the behavior at this point is likely to break something for existing installs.