           Thunderbird is funded by user donations. We don’t collect personal data, sell ads in your inbox, or secretly           train AI           with your private conversations. Thunderbird is <a href="https://en.wikipedia.org/wiki/Open-source_software">open source</a>. As part of the <a             href="https://mozilla.org">Mozilla</a> family you can be confident we           always put your privacy and security first.           
           Thunderbird is funded by user donations. We don’t collect personal data, sell ads in your inbox, or secretly           train AI           with your private conversations. Thunderbird is <a href="https://en.wikipedia.org/wiki/Open-source_software">open source</a>. As part of the <a             href="https://mozilla.org">Mozilla</a> family you can be confident we           always put your privacy and security first.           