Mozilla Thunderbird 1.5 Beta 1 Released Posted on 09.12.2005 by d3bruts1d Just a day after the release of Firefox 1.5 Beta 1, Thunderbird 1.5 Beta 1 was reeleased by MoFo. Related:Mozilla Firefox 3 Beta 5 AvailableFirefox 3 Beta 2 ReleasedFirefox 3 Beta 1 ReleasedMozilla Firefox 1.5 Beta 1 ReleasedMozilla Firefox 1.0.6 & Thunderbird 1.0.6