Convert OST to PST
You can instantly search OST to PST Converter software that easily Export OST files to PST Outlook. It easily selects multiple items of OST by Batch Conversion Option. It split large PST files ( 1GB to 25Gb). easily. The software provides the same folder structure in the PST file as it is in the Offline OST file. A free demo version is also available, but it transfers only first 20 emails from each folder.
More Info-: OST to PST Converter