Superlative Convert OST software is very efficient tool to export OST file data to PST file format. OST to PST software is one of the best software to repair corrupt Outlook OST file and easily get back exact OST file data. After recovery of OST file you can simply convert Outlook OST to PST with all mailbox files or folders. Through this software you can save big OST data file into PST file (1GB to 5GB sizes) during conversion process.