Here is another more advanced script that searches for messages of interest, then optionally exports and purges them. So, what makes this script more advanced? Unlike the other script that uses Search-Mailbox ( https://365basics.com/powershell-search-mailbox-script-to-go-through-all-mailboxes-find-a-target-message-and-remove-it/ ) this script below is based on New-ComplianceSearch cmdlet: Pros: Super fast, multi-threaded, takes about 1-2 minutes on average to complete the whole task. As Microsoft is trying to depreciate Search-Mailbox, they put more effort into New-ComplianceSearch, so we can expect new functionality to come in the future. Can create an export file that can be downloaded and investigated. Cons: Always searches through all folders including Purged Items which might create some confusion when showing results (if running the same search again) - see UPDATE 9/30/2019 Cannot copy messages to another mailbox for you to investigate. Of course there are quite a few scripts out there that use New-ComplianceSearch, everyone has their own approach. So let…