Utilise CubexSoft OST to PST Converter for Mac & Windows Tool to migrate unlimited Outlook OST files to PST file format. This software comes with so many advanced and unique features for users to easily bulk import OST data file to Outlook PST file format. All professional and non-professional users can use this Program and successfully convert OST file to multiple file formats such as PDF, MBOX, EML, MSG, DOC, RTF, TXT, etc. To know how to use it before getting its licensed edition, you can first use its Free Demo Edition, which allows applicable to import the first 25 items from OST file in PST without cost. To open bulk OST files in PST at once, you need to purchase its licensed edition.