For more information, please visit the following pages:

• Thunderbird
• Mozilla Foundation
• Gecko

Latest user agents:

• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:31.0) Gecko/20100101 Thunderbird/31.7.0 Lightning/3.3.2
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:31.0) Gecko/20100101 Thunderbird/31.7.0
• Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0 Lightning/3.3.2
• Mozilla/5.0 (Windows NT 6.3; rv:31.0) Gecko/20100101 Thunderbird/31.7.0
• Mozilla/5.0 (Windows NT 6.3; WOW64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0