If you are looking for a solution to export mailbox to pst from offline EDB so you can download this SysInspire EDB to PST Converter tool. It supports converting the EDB file to Outlook PST file format with all emails, contacts, calendars, journals, tasks, notes, appointments, and other items. with attachments. This tool provides a preview facility for the better conversion process through its preview facility you can get a live preview of all internal database of Exchange EDB file to export that item selectively. This EDB to PST tool supports all the latest and earlier editions of MS Outlook and Exchange Server(up to-2016).
For More Info:- Export Mailbox to PST from Offline EDB