Opt-out traffic is analyzed daily to determine when an existing Send Event should be closed or if a new Send Event should be created. Specifically, we analyze the opt-out traffic of the previous day to make this determination. For example:
1. Let's say today's date is 12/05. We would analyze all opt-out data from the previous day (12/4).
2. If we detect a new spike in opt-out traffic then a new Send Event will be created. If there was already a previous Send Event when the spike was detected then the previous Send Event would be closed with a close date of 12/3.
3. The new Send Event will have a start date of 12/4.
Send Event dates should never overlap, i.e. the end date of the previous Send Event will not be the same day as the start of the next.