26th
Mozilla has been supporting Thunderbird as a product since the beginning of the Foundation. The result is a good, solid product that provides an open alternative for desktop mail. However, the Thunderbird effort is dwarfed by the enormous energy and community focused on the web, Firefox and the ecosystem around it. As a result, Mozilla doesn’t focus on Thunderbird as much as we do browsing and Firefox and we don’t expect this to change in the foreseeable future. We are convinced that our current focus - delivering the web, mostly through browsing and related services - is the correct priority. At the same time, the Thunderbird team is extremely dedicated and competent, and we all want to see them do as much as possible with Thunderbird.
We have concluded that we should find a new, separate organizational setting for Thunderbird; one that allows the Thunderbird community to determine its own destiny.
Mitchell Baker of the Mozilla Foundation recognizes that the future of e-mail clients will probably be through Firefox, not Thunderbird, and is offering to move the Thunderbird effort to another organization.