Cross-server mail/friends list.

I think it would be nice to be able to add people from other servers to your friends list, or at least be able to send mail to them. Let's say you had a good run with some people via duty finder, how would you communicate with them? It's a shame you can't compliment them for a good run for instance. Just an idea. :)

Am I the only one? I've had some good random parties via duty finder that I'd love to join up with again too. It's a shame when you can't do stuff like Garuda Hard in time.