I can see how SE might have a privacy concern about spammers getting their hands on public information that would allow them to harass us even more than they do. Assuming that limiting a player's mail recipients to their Friends list is because Friends lists are private. After all, all a spammer needs to do is right-click on someone that is in a FC, look at their FC's Profile and ... oh, wait. Free Company profiles do not give out member lists. Member lists of Free Companies are private to those in the company. So unless someone is selling lists of members of Companies ... well, even then, those would be kind of useless. And I doubt that the gil spammers will make much headway in the "Send out these mails to your FCmates and we will give you $1Mil gils totally hidden don't worry you won't get banned" department if SE started allowing us to mail people in our FCs. So much for that.