I'd like to add one proposal for converting DBX files to PST format. DBX and PST file formats are unique, with DBX being used by Outlook Express and PST being used by the Outlook email client. You have two options for performing this cross-platform conversion. 1 is a manual, while 2 is third-party software. You can choose any alternative that meets your needs, but after bad past months with manual conversion solutions, I always prefer to utilize DBX to PST conversion Software
to convert DBX files to PST.