To export a vault's data as PST or EML in ZIP, the option to export should be enabled from the admin panel.

  1. Log in to the Vaultastic Application using Administrative rights and navigate to the Admin Panel.
  2. In the left pane, click on the Vaultastic domain and select Vaults.  The middle pane will show the list of vaults in the selected Vaultastic domain. 
  3. Click the vault summary shown in the middle pane. The details pane will now show the details of the selected vault.
  4. In the right pane, expand the Security section. 
  5. On the Enable Export option to export data from the specific user.
  6. Click on Save in the bottom right corner. 


If this is already enabled, you can download the data as PST.


Reference: