OST to MSG Conversion - Version 3.4 SysTools introduce superb OST to MSG Conversionsoftware which intelligently migrate OST to MSG. OST toMSG is the best OST Converter process which extracteach and every email messages from various folders andsub- folders and create accurate replica OST into PST,MSG and EML format without damaging anyone. Extract OST2010, 2007, 2003, 2000 files and Recover OST to MSG File.