I have no idea whether or not this is possible, but thought I would ask the question.
Once a week marketing send out an email to 3000 plus people with an attachment of roughly 1MB. Our outbound emails go from our exchange -> mail marshal -> messagelabs.
But they take ages to go and clog up the email queue.
Is there a way of assigning priorities to emails so that the bulk sent email gets a low priority and everything else has higher priority?