The File Transport Provider allows you to receive messages in the form of files from a specified directory (local or network), and similarly send messages as outgoing files.
The Receive Transport Provider requires you to configure the folder name and the wildcard filter. Context properties ReceivePath, FileName, and ReceiveLocationType are all set on incoming Messages.
The Send Transport Provider requires you to configure the destination folder, plus the output file name (which can include tokens from the Message Context surrounded by % characters, e.g. %MessageID%), the action to take if the file already exists, plus whether to write to a temporary file and then rename on completion (to prevent other processes from picking up a partially written file).