Sending PDFs in e-mail is unreliable, because; everybody doesn't have client-side email software such as outlook.
You may want to check out:
http://www.pdfemail.net/
I'm not completely sure what you meant by "canned" response, but PDFEmail.net uses Microsoft .Net (ASP.net) scripts to attach the PDF or Data + PDF to a SMTP message, and sends a response message or redirect to a url indicating whether it was successful or not.
No programming required, however; the scripts can be modified to include saving the PDF to a file, database, or whatever.