Archiving A Mailbox For Terminated Users In Office 365
Microsoft have now added a feature that allows you to keep a terminated employee's mailbox on your Office 365 cloud environment even after you have deleted their user account and freed up their licence.
This is a great way to ensure that their mailbox content is preserved in the event that you need to recover some of their mail later on. The mailbox can remain on Office 365 indefinitely without any cost to your company.
This feature is called Inactive Mailboxes, and this guide shows you how to get them set up.