I'm well aware that for technical reasons Blizz can't put mailboxes in the Panda starting zone. What I have a problem with is that the WoW Dev Team sends you mail on those new panda toons and you can't delete the toon unless you get their "in-game mail". Well it's a little dumb that I have to level that toon that I don't want anymore up till I get the choice to be horde or alliance.
I'm kind of surprised they haven't added a Blizzard-only mailbox to the area that can only receive items they have sent.
Until you pick a faction you would not be able to get mail. That is mostly why no mailboxes in the panda starting area.