What items can be backed up?
You can back up user mailboxes, shared mailboxes, 
and group mailboxes. Optionally, you can choose to back up the archive 
mailboxes (In-Place Archive) of the selected mailboxes.
Starting from version 8.0 of the Cyber Protection 
service, you can back up public folders. If your organization was added 
to the Cyber Protection service before the version 8.0 release, you need
 to re-add the organization to obtain this functionality. Do not delete 
the organization, simply repeat the steps described in "Adding a Microsoft Office 365 organization". As a result, the Cyber Protection service obtains the permission to use the corresponding API.
What items can be recovered?
The following items can be recovered from a mailbox backup:
- Mailboxes
 - Email folders
 - Email messages
 - Calendar events
 - Tasks
 - Contacts
 - Journal entries
 - Notes
 
The following items can be recovered from a public folder backup:
- Subfolders
 - Posts
 - Email messages
 
You can use search to locate the items.
When recovering mailboxes, mailbox items, public 
folders, and public folder items, you can select whether to overwrite 
the items in the target location.
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