Converting MBOX files to PST format manually is absolutely free but it can be little bit complex and tiring process for some users. Manual method has also some limitations like you can not convert corrupted, damaged or large sized MBOX files. That's why, to avoid any limitations, Thunderbird or many other users recommend to use a powerful tool like EmailsGuru MBOX to PST Converter tool. This tool supports MBOX files of 25+ email clients like Mozilla Thunderbird, Netscape, Opera Mail, Apple Mail, Yahoo Mail and many others. It easily convert MBOX files to PST format and offers to access or import all the data to all available editions of Microsoft Outlook. It is completely professional way to get fastest and error-free MBOX to PST Conversion process.