Most people want to change OST mail client to Outlook PST, because OST email client has limitations. By using EmailsGuru OST to PST Converter software, You can easily convert or transfer complete mailbox data of OST files to Outlook PST. The software provide direct option to convert multiple OST files to PST format in one go. The software protects entire data integrity and original folder hierarchy of OST files in resultant PST files. It is fully supportable to all latest and old versions of Microsoft Outlook as well as Windows Operating Systems.