Migrate Outlook PST to Thunderbird tool is the best utility for users to migrate their multiple email data of Outlook PST into MBOX file format. By using this useful tool, user can access the email messages of Outlook PST into Thunderbird. It is capable to convert multiple PST files along with email attachments into Thunderbird file format. This tool also manages the folder structure hierarchy which allows user to save their converted PST files into MBOX format into same folder structure according to their choice. It can be easily supported to all PST files created by different versions of MS Outlook.