Take the help of this most valuable and secured third party application named as SysInspire EDB to PST Converter software. That used to export mailbox to PST and other different formats such as EML, MSG, EMLX and HTML with maintaining all email properties such as from, to, bcc and subject. It can run without the need of Exchange server only MS Outlook installation is required before installing the software. User can download this software from the official website of SysInspire.

For More Info:- Export Mailbox to PST