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Thunderbird Thunderbird là ứng dụng email miễn phí, dễ dàng cài đặt và tùy chỉnh; đi kèm với nhiều tính năng tuyệt vời! The Future of Thunderbird Experience cutting edge features. Provide feedback to help refine and polish what will be in the final release. Thunderbird Daily Help us test the newest developments made to Thunderbird every day by using the unstable Daily channel. WARNING! Daily is an unstable testing and development platform, make sure you back up important data regularly!