Thunderbird

User Agent
Mozilla/5.0 (Windows; U; Windows NT 6.0; en-GB; rv:1.8.1.12) Gecko/20080213 Thunderbird/2.0.0.12
Mozilla/5.0 (Windows; U; Windows NT 5.1; fr; rv:1.8.1.16) Gecko/20080708 Thunderbird/2.0.0.16
Mozilla/5.0 (Windows; U; Windows NT 6.0; en-GB; rv:1.8.1.24) Gecko/20100228 Thunderbird/2.0.0.24
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0) Gecko/20130509 Thunderbird/17.0.6
Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.17) Gecko/20080914 Thunderbird/2.0.0.17
Mozilla/5.0 (Windows; U; Windows NT 6.0; de; rv:1.8.1.17) Gecko/20080914 Thunderbird/2.0.0.17
Mozilla/5.0 (Windows; U; Windows NT 6.0; de; rv:1.9.2.8) Gecko/20100802 Thunderbird/3.1.2
Mozilla/5.0 (Windows; U; Windows NT 5.1; de; rv:1.8.1.20) Gecko/20081217 Thunderbird/2.0.0.20