Are you talking about the "open selected"? Because I don't see how the "open all" could skip with the current implementation (except for cod mails which it's supposed to skip).
Anyway, for the open selected I'm gonna have to find a better solution somehow. Increasing the delay further seems pointless as it'll be slower than manually opening. I think I'm gonna do some checks with the player's inventory/money to see if it's been looted or not instead of waiting and praying like it's currently doing.