b'EXCHANGE ONLINE ARCHIVING AND HOLDS In Exchange Online, the default out-of-the-box setup is for Outlook content to flow from deleted items to the Recoverable Deleted items folder. The Recoverable Deleted Items folder then purges these files after fourteen days. After the purge, there is no way to get these items backeven when they might be required for a lawsuit or as business evidence for a pricing dispute with a customer. The recommended approach is to put all mailboxes on a litigation hold known as an In-Place Hold in Microsoft 365. This hold then protects that content that has been placed on hold for deletion. This hold can also be extended across the entire tenant to retain data from other sources such as OneDrive and SharePoint. In-Place Hold can be applied to any user with just a few clicks. This is done without indication to the end user. The Outlook interface does not changemessages can still be sent to Deleted Items, removed from Deleted Items, and purged from the Recover Deleted Items container. However, on the server side they are then stored in a Purged container until the In-Place hold is removed from the user. The messages will disappear from the end users view, but all messages are still searchable during a discovery request. On the Exchange Online platform, this would require the Exchange Plan 2 license, or the Microsoft 365 E3, or E5 Suite. If kept on-premises, this requires the Exchange Enterprise CAL which is sold a la carte or as part of a suite. To preserve all mailbox content, including deleted items and original versions ofmodified items, place a mailbox on Litigation Hold. When you do this, the users archive mailbox (if its enabled) is also placed on hold. Deleted and modified items are preserved for a specified period or until you remove the mailbox from Litigation Hold.5'