InFixi OST to PST conversion tool does OST to PST conversion within few clicks and without much effort. This OST conversion tool maintains the original folder structure as well as the original message formats-TXT, HTML and RTF of original OST file while conversion. It offers you to recovered large PST file into small (1GB-5GB) sized two or more PST files when saving. It is compatible with all Outlook versions up to 2013 (32 bit and 64 bit).