What is the protocol for emails when members accumulate points across the various reward thresholds?

How are 'Approaching Rewards' emails handled when there are multiple rewards within a close range of points? Will each reward trigger a separate email, or will there be a consolidation? For instance, if rewards are set at 100, 200, 300, 400, and 500 points and a member has 80 points, prompting eligibility for reward 1, will an email be sent? Similarly, when the member reaches 160 points, will an email include both rewards 1 and 2?