In July 2012, Thunderbird has transitioned to a new management model, with new features developed by the broader free software and open source community, and security updates and enhancements handled by Mozilla.
Thunderbird is a free, open source platform email and news client (NNTP) developed by the Mozilla Foundation. The project strategy is modeled on Mozilla Firefox, a project aimed at creating a web browser.
- Complete list of changes can be found here
- OS X 10.9 or later
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