Thunderbird 45.6 For more information, please visit the following pages:ThunderbirdMozilla FoundationGeckoLatest user agents:Mozilla/5.0 (Windows NT 6.0; rv:45.0) Gecko/20100101 Thunderbird/45.6.0Mozilla/5.0 (Windows NT 10.0; rv:45.0) Gecko/20100101 Thunderbird/45.6.0 Lightning/4.7.6