In my fear that this isn’t possible, anyone have the VF & Controller Code of the page, so I don’t need to write the entire thing myself? I want to have the same page and everything but simply use my Conga Composer PDFs.
I’d be very glad to hear your responses!
What I did once was remove the buttons on the Quote Page Layout for viewing/emailing the PDF and replace them with my own custom buttons. I ended up having a VF page that the button would go to that displayed the PDF (in an iframe) and let the user save or email the PDF via buttons on that page.
Hopefully the information isn’t outdated, I posted about it a while back: http://michaelwelburn.com/2013/03/18/sending-visualforce-pages-as-email-attachments-in-salesforce/