Forum Discussion

matthlock25's avatar
matthlock25
Copper Contributor
Oct 01, 2024

Shared mailbox activity report

I'm trying to generate a report showing email activity for each mailbox in our tenant, to see how many items were sent or received in the past 180 days. The plan is to aggregate this data to find out which locations are the most/least active in using email.

 

Although the M365 reports can do this, it only includes user mailboxes so I'm missing out a big chunk of information from shared mailboxes, which is skewing the data since a lot of users would use these instead of their own mailbox.

 

Is there any way to get this data? It only seems possible to get mailbox size or folder statistics which is only a point in time figure.

3 Replies

  • You can build your own report based on the message trace data. The issue there is the limited duration you can cover, so you will need to run these periodically.
    • matthlock25's avatar
      matthlock25
      Copper Contributor
      Thanks.

      Is that the best solution though, as I have over 3500 shared mailboxes to query, and doing a message trace on all those would be painful. I was hoping for something a little more prepared.
      • VasilMichev's avatar
        VasilMichev
        MVP
        You have to get them individually. The alternative would be to license them, so they appear in the built-in report 🙂