What is the easiest way to get a message volume report for some shared mailboxes? In particular I would like to know how many inbound and outbound messages occured over the course of a calendard month.
It appears as if I could do a 30 day look back on the 1st of each month with the online reporting tool but I would rather not be beholden to always running a report on the 1st.
I have been getting some of this data from an on-prem spam filter but as we move to the off-prem server I would prefer to kill the on-prem system. This is a show stopper for our service metrics.