Thunderbird is maintained by the Thunderbird Community, in cooperation with Mozilla Corporation, a wholly-owned subsidiary of the Mozilla Foundation. Thunderbird derives almost no revenue from search and other non-donor sources. Thunderbird relies heavily on the generous donations of users and friends of Thunderbird.
Thunderbird 目前由 Thunderbird 社区维护，并与 Mozilla 基金会的全资子公司 Mozilla 公司合作。除捐款外，Thunderbird 几乎没有收入来源。Thunderbird 须仰赖用户与朋友们的慷慨捐助才能持续发展。