To import Outlook PST to a Thunderbird account manually, first install the ImportExportTools NG add-on in Thunderbird. Then, export PST emails to EML format using Outlook and import them into Thunderbird using the add-on. While effective, this method is time-consuming and requires technical steps.
For a hassle-free solution, use the BLR PST Data Converter Tool. It directly converts PST files to Thunderbird-compatible formats, ensuring accurate and quick migration without data loss or complex procedures.