However, there are no any way is available for users to move Thunderbird to Outlook. In this situation, it is always suggested to use third party tool to perform the conversion process to export Thunderbird MBOX to Outlook PST file format along with entire data. It is the best suitable solution for users to migrate Thunderbird to Outlook PST and access their entire mailbox items in MS Outlook. To perform the migration, users need to download Thunderbird to Outlook converter in the computer. After that, users need to select the Thunderbird MBOX file and choose destination folder and click convert button. It allows user to import MBOX to Outlook without losing any data.