ZOOK OST to MBOX Converter is a best tool to convert offline OST file to MBOX file format. It easily fix highly corrupted or damaged OST file and convert them into MBOX format. Using this tool, users can export Exchange Server OST file to MBOX format. The software comes with wide range of features and user-friendly interface, which makes it possible to bulk transfer of OST file to MBOX format within few moments. The software protects entire data integrity and original folder hierarchy of OST file throughout the migration process. It is one of the best tool to convert OST file to MBOX format moreover users can swiftly import converted MBOX files on any MBOX supported email clients like Mozilla Thunderbird, Apple Mail, Yahoo Mail, Opera Mail and many more.