Hate to contradict BBR, but...
It's a bit of both. Working as intended, but now I think about it I don't think there's any reason why the game must continue to exist. The rMail is actually stored with all the user details intact, they're just concealed behind character names (until you reply). The character names are actually also cached in part of the rMail so looking having the game still around isn't required (as far as my hazy memory can recollect).
I think I can actually remove the requirement for the game to still exist without there being any undesirable effects. Let me ponder and test it a little more, but I think I can rip that requirement out.