So I was re-reading some old forum posts and I had posted a while back about exposing the built-in smtp settings..
http://www.perceptiveautomation.com/userforum/viewtopic.php?f=18&t=8882

As of a year ago, Indigo did not support that (or adding attachments).  Perhaps someday we can refactor the email section to reduce the amount of additional configuration required.

I figure, for this pass, we can just add some configuration fields into the ui and then enable the email actions if/when they're populated.