Is it possible to do an eDiscovery search to bring back everything in a particular subfolder for a particular user?
If the user has a folder in their mailbox called "Foo", i need the search to get everything in the root folder of Foo and all subfolders structures undrneath Foo.
Ya, its always flat unless you request the ENTIRE mailbox, then you get the folders.
I'm trying to figure out if there is a rule/query that can target emails from a specific folder/path.
Nope, no support for folders you have to narrow it down via the other properties: https://blogs.technet.microsoft.com/quentin/2014/07/30/using-search-properties-and-operators-with-ed...