You can efficiently Import Thunderbird mail into Office 365 with the eSoftTools Thunderbird to PST Converter Tool. It can preserve your all data like email properties, email heading, styles, fonts, etc. In this case, Thunderbird to PST Converter Tool is superb that permits you to convert any Thunderbird MBOX file to PST without the need for technical knowledge because of its easy GUI interface.
Read More:- Import Thunderbird mail into Office 365
Read More:- Import Thunderbird mail into Office 365