If you're looking for a way to convert Thunderbird to a PST file, look no further. Then I recommend SysInspire Thunderbird to Outlook converter software, which has the ability to automatically load predefined Thunderbird MBOX file locations for conversion. It works well with all versions of Windows and Microsoft Outlook 2019, 2016, 2013, 2010, 2007, and 2003. Thunderbird data can also be exported in a variety of formats, including PST, EML, EMLX, MSG, YAHOO, OFFICE 365, GMAIL, and HTML files.
Read More:- Convert Thunderbird Mail to Outlook

To set up Thunderbird to sync to your Outlook.com account's email:
Open Thunderbird.
From the Application menu, choose Add Account
Input your account information, choose Options… then Account Settings
Click the Account Actions button, then choose Add Mail Account
Input your account information.
Click Continue.
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Peter
If you need to convert Thunderbird to Outlook PST file free then utilizing the high-level technology-based eSoftTools Thunderbird to Outlook converter software, it has unique technology that turns your single as well as multiple Thunderbird MBOX files to Outlook PST file without losing too much time. The changed PST file from Thunderbird is in Unicode form, so it's simply open in all editions of MS outlook 2019, 2016, 2013, 2010, 2007, & 2003. It can also provide a free demo for user comfort in which users can convert the first 25 details of Thunderbird MBOX to the PST file.
For more info- Convert Thunderbird to Outlook PST file free
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