Thunderbird app logo, unchanged. The Thunderbird logo is a trademark of the Mozilla Foundation in the U.S. and other countries.
Source: https://www.thunderbird.net/media/img/thunderbird/favicon-196.png
Reviewed: 2026-10-22
Permission: https://www.mozilla.org/en-US/foundation/trademarks/policy/ permits using Mozilla logos in visuals to truthfully refer to and/or link to the applicable programs, products, services and technologies hosted on Mozilla servers. Thunderbird appears in the Mozilla trademark list: https://www.mozilla.org/en-US/foundation/trademarks/list/
Conditions: truthful descriptive reference, adequate spacing, attribution visible, no implied affiliation or endorsement, do not modify or display the mark more prominently than AltStack branding. Use for the actual Thunderbird Android listing linked to https://www.thunderbird.net/en-US/mobile/. This is not an open-source copyright grant for branding or a software redistribution license.