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Keep Your Vital Information Organized Secure and Protect Your Mail Mozilla has bolstered Thunderbird’s acclaimed security and privacy measures to ensure that your communications and identity remain safe. It’s like having your own security guard online.
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Thunderbird 3 Beta 4 is Now Available

Mozilla Messaging

We subscribe to the Mozilla Manifesto. Furthermore, we believe that email is the killer app of the Internet, a vital tool in modern society, and one which has not evolved as much or as fast as it should have. We're driven to improve the experience of people communicating with each other on the Internet.Our first tool in this endeavor is the Mozilla Thunderbird email client, which is already in use by millions of people worldwide.

Download Thunderbird

Mozilla’s Thunderbird 3 email application is more powerful than ever. It’s now even easier to organize, secure and customize your mail.
Download Thunderbird In addition, there are dozens of third-party add-ons to let you customize Thunderbird to fit your needs.