Simply download and install the SysInspire Thunderbird to PST converter to export Thunderbird to Outlook. It is the most dependable conversion utility in the market. It can convert a single or multiple mbox files to PST files in a reasonable amount of time, and the size of Thunderbird mbox files for conversion is unrestricted. Thunderbird profiles can also be exported in a variety of formats, including PST, EML, EMLX, MSG, YAHOO, OFFICE 365, GMAIL, and HTML files.
Read More:- Import mbox file to office 365