To manually back up Thunderbird emails, you can use the built-in profile backup feature. First, locate your Thunderbird profile by navigating to Help > Troubleshooting Information and clicking on Open Folder under the "Profile" section. Next, copy the profile folder to an external drive or another location on your computer. While effective, this method has challenges: it's time-consuming, prone to errors, and doesn't offer selective backups. Moreover, restoring emails requires manual handling, which can be complex.

For a more efficient solution, the Cigati Thunderbird Backup Tool simplifies the process. It allows you to back up Thunderbird emails quickly and securely. The tool supports various formats like PST, MBOX, and EML, and offers selective email backup, ensuring you save only the necessary data. With an intuitive interface, this tool eliminates the manual steps, reducing the risk of errors while providing a reliable backup solution for Thunderbird emails.

With the help of MacSonik Thunderbird Backup Tool to save Thunderbird emails into different file formats like PDF, PST, EML, EMLX, DOCM, DOCX, PNG, JPG, MSG, HTML, MHTML, GIF, etc. It can back Mozilla Thunderbird emails to 20+ formats and its prominent feature of Eliminate Duplicate Email is outstanding. Using this feature you can remove the identical emails from the backup process of Thunderbird emails.