Mozilla Thunderbird 3 Aplha 1 has been released. Mozilla Thunderbird 3 Alpha is is built on the the Gecko rendering engine. The Mozilla Messaging team calls this release “Shredder a1” to signify that this release is early, buggy and should NOT be used in a production environment. Mozilla ThunderBird 3 Aplha 1 aka “Shredder A1” is still in beta and has been released basically for testers and developers type of people.