AddToEvernote is a free AppleScript that will add the Watch Folder functionality to the Evernote Mac client.
The AddToEvernote script works with the ScanSnap S510M or S1500M scanners.
Download the AddToEvernote script and save it to /Library/Scripts/Folder Action Scripts.
· Create or select a folder that you want scanned PDFs to go into. Right-click on it and select More and then Enable Folder Actions
· Right click on the folder again and select More and then Attach a Folder Action. Select the AddToEvernote script that you just saved
Now set up ScanSnap normally to scan to the folder that you just configured. When you add a PDF to it, the Applescript will go through that folder and add the files into Evernote.