Thunderbird Desktop Meet the powerful email, calendar, and contacts app for Windows, Linux, and macOS. Thunderbird Mobile Learn about the leading open-source email app for Android. Blog Learn about new product releases, community events, tech tips, and more. Desktop Help Find the help you need configuring and using Thunderbird Desktop. Mobile Help Find the help you need configuring and using Thunderbird Mobile. Who We Are Learn how our values, community, and organization shape the future of Thunderbird. Contact Us Find out who to contact and how. Careers We have an enthusiastic team with diverse talents. Learn how to join us. Donate Learn how to donate as an individual or business to support Thunderbird and open source. Participate We need helping hands of all kinds. Learn how you can help Thunderbird and others. Downloads