Unzip the files: 
pack-01.zip, 
pack-02.zip, 
pack-03.zip, 
and pack-04.zip 
and place all files (taken out of subfolders) 
in the ATTACHMENTS_DIRECTORY folder.

Then take all of the files from the gmails-to-doj-document-attachments
folder and copy them to the ATTACHMENTS_DIRECTORY folder.
 
The emails will display with the ATTACHMENTS_DIRECTORY
folder empty as well. 

UI is minimal. Uses a "page" GET param to navigate from one
file to the next. UI buttons are at the top right of the page and can 
be removed on the index page if desired. You just need a basic php web server
(local or remote).