As of July 2012, Thunderbird has transitioned to a new governance model, with new features being developed by the broader free software and open source community, and security fixes and improvements handled by Mozilla.
Thunderbird is a free, open-source, cross-platform e-mail and news (NNTP) client developed by the Mozilla Foundation. The project strategy is modeled after Mozilla Firefox, a project aimed at creating a Web browser.
Note: Now requires OS X 10.9 or later
- Crash due to incompatibility with McAfee Anti-SPAM add-on; add-on is blocked in 52.0.1
- Clicking on a link in an email may not open this link in the external browser
- Large number of blank pages being printed under certain circumstances
- OS X 10.9 or later