Shared inventory between multiple characters?

I only bring this up because in Diablo everyone created mule characters or even mule accounts to hold the 500 chipped gems they collected etc.

Can you tell us how many items per character you can stash away?

Do you plan to have a shared inventory between characters on a single account? I know global agenda does something like this.

Also if there will be no shared inventory between different characters will there be ways to send the items to other character like some form of mailbox?

Otherwise I fear people will create a mule accounts to trade items back and forth between multiple characters.

Is any of this a concern or has it already been figured out?

Thanks.

As far as I know, there's going to be one big stash for all characters on a single account. Nothing definitive about its size, though.

A mail system has also been confirmed.

Nice necro, lol. Are you sure they aren't talking about the forum mail system?

Though I wouldn't mind if there was an in game interface to the forum mail. I'd hate there to be two mail systems.