You can use Exchange Online Self-Service to manage backups of your email inbox. Using this feature, you can perform any of the following tasks:
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View messages and attachments 
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Respond to messages 
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Download a message 
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Export messages to PST or CAB in EML or MSG format 
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Restore messages back to your mailbox or to a different location 
To view and use Exchange Online Self-Service, the Commvault administrator must enable the feature for your user group and the Microsoft 365 plan.