Perform OST to PST Conversion with this third party tool Regaintechnologies OST to PST Converter Software. this software easily Convert your OST file to PST file format without any data loss risk. user can also Repair their corrupted OST file and Recover deleted OST file data like: emails, attachments, contacts, notes, tasks, calendar entries, etc. This Software allows user to save OST file into multiple file formats like: PST, EML, MSG, MBOX, HTML, ICS, VCARD formats. user can also Export OST email into Office 365 Account and Live Exchange Server.