If you want to restore the your Office 365 mailbox data from both Admin and User. Then I would like to recommend to use the CloudMigration Office 365 email backup tool. It also restore emails by using OST/PST files. the tool also export your email into multiple file formats and it also transfer your mail from one mail client to another mail client. With the help of the tool you can also add multiple OST/PST file at once to recover emails. It comes with attractive user interface. the tool available for Mac OS and Windows OS.
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