CloudBacko Pro and Lite backup software allow users to back up data stored on supported cloud storage with the Cloud File Backup Module.
CloudBacko Pro lets an authorized Office 365 administrator to list and select individual users' mailbox data in an Office 365 domain to back up. CloudBacko Lite only allows an Office 365 user to backup his/her mailbox data.
Select the edition of CloudBacko to see how Office 365 Exchange Online Backup Module works in such edition: