If you don’t know how to recover OST file into PST format then I recommend to you the best software is eSoftTools OST to PST Converter Tool. It has many features to convert OST to PSTlike- name convention, split large PST file into small PST files, email filtering. It save OST file into multiple files format (PST, MSG, EMLX, MBOX, Gmail, HTML, ICS, and Office365). It’s also providing a free demo version for all users.

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