I just posted another section of my emacs-init.org, here:

http://matt.hackinghistory.ca/2015/07/15/mailing-subtrees-with-attachments/

It's mostly a summary of all the help I've gotten from the list this week,
though it's just a draft really and I don't acknowledge most of your
assistance! I hope to edit again in a bit, but for now, in case anyone else
is following these long threads, it's sort of a summary.