This flow chart has some cute illustrations and a few visual cues to secure mail. However, the format just isn't ideal for a flow chart — the user has to scroll quite a bit, just hoping that they're following the right line by the time they get to the next answer. An interactive or even just wider experience would be more user-friendly. The answers are also conveyed solely through text, and the red "you'll have to find another way" isn't particularly helpful for the user if that's the path they go down. I'd give this a D.