the best option would be the limit of mailboxes/key per day ( 10 key/box).
without dropping the keys, e.g. for killing 10 moobow quest 10 keys. // ( Login Rewards maybe )
Now is broken event.
whales everywhere, whales everywhere whales everywhere, whales everywhere whales everywhere, whales everywhere whales everywhere, whales everywhere whales everywhere, whales everywhere
@Cyan