If you are looking for a free solution to know how to export Office 365 mailbox to PST format, in this case, you can download a demo version of Shoviv Exchange Recovery Manager tool. The demo version will help you to know step by step process of exporting Office 365 mailboxes to PST format. It will also let you export the first fifty items per folder as well. Once you agree with the demo version, then you can make use of the full version of Shoviv Exchange Recovery manager tool to export unlimited mailboxes from Office 365 to PST format.
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