To convert all Exchange mailbox items into a pst file, use the edb-to-pst converter software. All mailbox items can be converted to pst format using the edb-to-pst tool. Exchange edb-to-pst software recovers unmounted edb files in to the pst format. stella edb to pst converter software corrupted edb file data in to pst file. All edb mailbox entries can be converted by stella to pst software to eml, msg, mhtml and pst files.
This link provides more information
https://www.stelladatarecovery.com/exch ... erter.html