Are we sure about that? Our communication limits only allow one email in a given day (multiple for the week). If I blast out an email for a white paper, for example, and someone clicks to arrive at the landing page and download the content, they DO receive the thank you email (operational) with the content. If operational emails counted toward your daily/weekly limit, then they would have been prevented from getting the thank you email, having already received the invitation email earlier that day.
In the Admin section there is a checkbox to block non-operational emails if the lead is over the communication limits. Does this mean that if it is NOT checked, then it WON'T block Marketing emails? Or does it mean that it only blocks Marketing emails if checked, while operational can pass through?