Well I know that if you are checking a POP3 email account with Plus! it will ALWAYS show a toast when there are new emails (something that I don't agree with
) but if you are refering to the likes of your hotmail emails then I'm not so sure, there may be something but that would require a more advanced scripter and making sure that toasts can be shown even when busy in your preferences. You could always just use a different status as another option, but I don't think you really want to....