This is a comment.

Any company blog is boiled down to an advertisement at some level. If your interested in learning about how we technically do a lot of these things scroll to the bottom of the article and checkout the technical companion post. This post is merely gives context of what/why. http://hack.close.io/posts/building_better_email_integration... gives you the how.

EDIT: I don't know where I got my internet license. Wrong link now fixed.