Journal: internet communication - private & commercial

I have an interest in the use of PDF's as the best method of communication using graphic rich or photograhic image attachments to email messages. I think there is a PDF free reader and a low cost PDF creator recently made available that will save photos as a PDF and then transmitted as an email attachment, on receipt, using this new free PDF reader you can open the attachment and save it back to it's original resolution. If anyone has a clue as to the name of this product I would really appreciate some feed back.