for automated mailings under classic reports, the data is grouped by report id, if we compare the data from the event export, we have a mismatch in the day of the send events.

For the acoustic reports, the date of the last report id is shown, but the report id runs untill ~01:00 instead of 00:00 (or better 23:59:59).

This means that for the messages with a report date of e.g. 12 feb 2021 , 99 % was sent 11 feb 2021.

two ways to fix:

• use the first report date ocurrance instead of the last in the reports

• better, assign a new report id just before midnight instead of 01:00