a client of mine is running a hybrid enviroment of O365. A user requested i delete his mailbox content from a specific date, lets say from 1.1.2018 up to 31.12.2018. I’ve tried googling the issue and have found this Delete mails based on a date range for a specific mailbox via - Microsoft Community but the search-mailbox cmdlet isnt working for me. I’ve tried doing it via get-mailbox with -searchquery but searchquery is also not responding. Any input on how to tackle the issue is very appreciated, I’d really like to avoid delegating myself the permissions to his mailbox and manually deleting them.