Provided herein is an electronic message management platform that enables calculating a size of a sample of a message recipient list that delivers a confidence level greater than threshold for the entire message recipient list by applying a predicted bounce percent for the list to a sample size selection algorithm, selecting a total of recipients in the message recipient list that is consistent with the sample size, processing messages to each of the recipients in the sample, monitoring message life cycle events for the recipients in the sample set over a period of time, and based on the monitoring taking an action with the message recipient list selected from a list of recipient list actions consisting of processing remaining recipients in the message recipient list and halting processing of the message recipient list.