Thunderbird is Mozilla's next generation e-mail client. Thunderbird makes emailing safer, faster, and easier than ever before with the industry's best implementations of features such as intelligent spam filters, a built-in spell checker, extension support, and much more. Thunderbird gives you a faster, safer, and more productive email experience. We designed Thunderbird to prevent viruses and to stop junk mail so you can get back to reading your mail. Read on to find out more about the reasons why you should use Thunderbird as your mail client and RSS reader.
Thanks to M.Poorya for the update.