If you want to convert the OST file into PST file format then, MailsSoftware OST to PST Converter can be the best software for you. Using this OST File Converter software you can export the complete OST file database without losing a single bit of content. The tool is compatible to recover corrupted, damaged, and orphaned OST files and export them into Microsoft PST format. Here users can convert OST files into PST, EML, MSG, MBOX, MHTML, contacts to VCF, and Calendar to ICS file format. Before conversion, users can view all OST file databases in the preview section. The utility can convert selected Exchange Server OST files into PST format with full accuracy.
You can download the Free DEMO version of this OST to PST converter tool that enables you to convert the first 20 email items per mailbox at free of cost.