If you want to split oversize OST files into Small OST files, then you’ve come to the right place and can try the best Split OST File tool. This software can separate OST files into many tiny OST files with data accuracy. It enables users to break any size OST file, that there is no file size limit. Also, can add single, multiple Offline OSTs to divide it down into smaller OSTs. By size, date, sender’s name, and folder category, can also divide large OST files into many little OSTs. However, this application allows you to skip duplicate emails from the selected OST folders and protect the resulting folder with a password.