Need to export Thunderbird to outlook 365, then I advise you to use the eSoftTools Thunderbird to PST Converter tool, It is one of the astounding tools to export single as well as various Thunderbird MBOX files to PST file, it can auto-detect configured MBOX file section for exporting in PST file without harm any collected data of Thunderbird MBOX. This software is 1oo% secure and easy to use for the user system because it's fully tested by online scanners and antiviruses.
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