SysInfo Thunderbird Backup Tool is an easy and reliable software designed to help you safely back up your Thunderbird emails, attachments, and folders to your computer or an external hard drive. It supports saving your mailbox data in multiple formats such as PST, PDF, EML, CSV, MBOX, DOC, and more, so you can easily access or use your emails anytime you need. You can also migrate your Thunderbird emails directly to Gmail, Office 365, Yahoo, IMAP, and many other email accounts without any data loss. This tool gives you full control over your backup — you can preview emails before saving them, remove duplicate items to save space, and even choose specific dates or folders to back up only the data you need. It also offers an option to back up emails with or without attachments, depending on your preferences. With its clean and user-friendly interface, SysInfo Thunderbird Backup Tool makes it simple for both beginners and professionals to secure their Thunderbird mailbox data quickly and safely on any Windows system.