AppleScript with Mail

Try this :

1. Create new mailbox named Folder 3 in Mail. See Attached Images.
2. Create new rule in Mail. See Attached Thumbnails. In Perform the following actions : choose Run Applescript and select the script you saved in step 3.
3. Paste code in Script Editor and save script.
   
   
   Code:

   using terms from application "Mail"
   	on perform mail action with messages theMessages for rule theRule
   		tell application "Mail"
   			repeat with eachMessage in theMessages
   				if eachMessage's read status is true then
   					move eachMessage to mailbox "Folder 3"
   				end if
   			end repeat
   		end tell
   	end perform mail action with messages
   end using terms from