Please note, I am not trying to send an attachment with the vacation responder.
I am trying to set up an indefinite vacation responder in Gmail that informs anybody emailing the address that it is no longer active. However, there is a script set up that saves any attachments to a Google Drive folder. I don't want the email to auto-reply to these people, since they know about this functionality and are not expecting a response.
So basically, is there any way (even using a 3rd party app) that I can set up an auto-response email to be sent to everyone, excluding those who attach files in the original message.