Is it possible for an account wide bank to be implemented? There is obviously no easy way to transfer items from one's main character to an alt due to the friends list/mailing list setup, the easy solution would be to perhaps have either an "Account Bank" post similar to the Summoning Bell in the market places, or, an account armoire as such available in the inn.

Apart from that, it requires taking someone elses time up to pass them your goods, log out and back in on your other character and collect from your friend.

Or could the mailing system be adjusted to add your alts on your account on your server?