You can export PST emails to Thunderbird. I ran into a similar problem a few days ago; however, after some Google searches, I quickly fixed it. Correct this by correctly exporting PST to Thunderbird using the DailySoft PST MBOX Converter tool. The program does not lose data during the export process; it exports without posing any risks. There is no file size limit; hence, the application can efficiently export enormous amounts. Including To, From, Cc, Bcc, Date, Time, Subject, and more, the PST export preserves every item of data from an email. The conversion from PST to MBOX requires no guidance. The utility can export PST ANSI and Unicode data to Thunderbird. Install MS Outlook; it is not necessary if you want PST exported to Thunderbird. It supports Windows 11, 10, 8.1, 7, XP, Vista, and earlier editions. Try what the best tool can offer with its free version.
Read More:- https://www.dailysoft.org/pst/mbox/