I have been tasked with a review of all our Shared Mailboxes in my companies Tenant. We have around 550 to be looked at. What I need to know is the last date an email was received into the Shared Mailbox and the last time a mail was sent from it.
Anyone do anything similar?
Cannot use get-messagetrace as it only goes back 10 days max, ideally, I would need to be able to see at least 6 months back, longer if possible.