e-mileage
When you get an email that's so good you send it to your friends, and they send it to their friends, and it's like you're all in an email cult.
This email about a free vacation is now turning my friends into email cult members.
I got an email about winning a million dollars and now my whole class is in a cult.
My dad sent me an email about a free car and now my whole family is brainwashed.