The second and third post of this thread explain that Hermes pulls in all the useful information allowed by the Facebook API. Unfortunately, "email address" is not something Facebook offers up. Other devices that pull in additional information--such as email addresses--do so through some other, private Facebook API. Access to that API would require negotiation with, and likely money given to, Facebook. I'm sure Jaffa would be only to happy to speak with someone about gaining access if anyone here has an "in", but I'm sure he's neither willing nor able to hand over large sacks of money for the privilege, and I don't know if he'd be willing to sign NDAs and take Hermes closed source.