It looks like you're new here. If you want to get involved, click one of these buttons!
It was tolerable in the betas because the mail system was never down or slow, but now... You don't get them items right away, you can't mail again until the last mail has been "Processed" and sometimes the mailing system is unavailable. I assume from everyone trying to mail their friends/party members crap.
Should have left trading in as well as mail. Really, in all the games with mail systems in them, I've hardly ever used it. It's an annoyance to mail the person right next to you.