That's interesting about the powerplant .. I bet there was a good amount of face palming going on when that was picked up.

Email appealed to me mainly because it explicitly includes identity. The system I was attempting to use it for was an online school data management system that needed to stay in sync with the schools in house data systems. Unfortunately spam filters just kept breaking things, because in the UK many schools have what are know as "managed services" which translates to underpaid keyboard monkeys with no clue running their IT infrastructure.