Looking to store Thunderbird emails offline? Use the Thunderbird Backup Tool to save your mailbox safely to your PC or hard drive. It allows complete mailbox export or selective folder backup with attachments included. You can choose formats like PST, PDF, or MBOX. The software ensures no data loss and retains folder structure and metadata. It also includes filters to export by date or subject. Fast, reliable, and user-friendly, this tool is a must-have for users who want to access their Thunderbird emails anytime, even without internet.