How to Export & Delete Users’ Online Archive Emails

1. Exclude User from Retention Policy 

Exclude users from the Retention Policy(Microsoft Purview->Data Lifecycle Management->Retention Policies) who need to clean up the Online Archive’s Emails. 

2. Backup User’s Emails  

Create a case in eDiscovery and select the correct condition of the range of the User’s deletion date. 

3. Download User’s Emails via Content Search 

Download the PST file from the 'Process Manager' when the export finishes. 

4. Delete Emails from Achieve Mailbox 

Create a Retention Tag and Policy, select the correct time that needs to be deleted, then apply it to a user. 

PS: TAG must select “Automatically to entire mailbox” and “Permanently delete” 

 

1)Apply the delete policy on the user. 

5. Wait for Deleing to finish 

1) Check in Exchange Admin Center whether the Online Archive Emails storage has decreased or not 

2) Change the User’s retention policy back to normal