Quick and easy tip today. A user left the company and to free up the license used on Office365 but keep the user’s mailbox, you can easily convert the mailbox to a shared mailbox, which you don’t get charged for on Office365.

Basically, go into Exchange Admin Center > Recipients > Choose the Mailbox you want to convert  and on the right side, click “Convert to Shared Mailbox”

 

That’s it!