This opens a folder containing AppleScript files for integrating SpamSieve with DragThing, Emailer, Eudora 5.2, Outlook Express, PowerMail 4, and Mailsmith. These can be installed by dragging them into the proper locations.
Opening the containing folder (using Command-Up-Arrow) reveals the scripts for Entourage, as well as SpamSieve’s plug-ins for Apple Mail and Eudora 6. Normally, there is no need to access these items directly, as SpamSieve can install them automatically (see above). They are accessible here in case you want to install them manually.