Mozilla Thunderbird
| Mozilla Thunderbird | |
|---|---|
Logo used since 2023 | |
Mozilla Thunderbird 115 showing the mail inbox | |
| Developers |
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| Initial release | July 28, 2003 |
| Stable release | Monthly release: 148.0.1 / 10 March 2026 ESR: 140.8.1esr / 10 March 2026 |
| Preview release | 149.0beta (25 February 2026) [±] |
| Written in | C, C++, JavaScript, CSS, Rust, XUL, XBL |
| Engines | Gecko, SpiderMonkey |
| Operating system | Windows 10 or later; macOS 10.15 or later; FreeBSD; Linux; Android |
| Size | 50 MB |
| Available in | 65 languages |
List of languages Albanian, Arabic, Armenian, Asturian, Basque, Belarusian, Breton, Bulgarian, Catalan, Chinese (Simplified), Chinese (Traditional), Croatian, Czech, Danish, Dutch, English (British), English (US), Estonian, Finnish, French, Frisian, Gaelic (Scotland), Galician, German, Greek, Hebrew, Hungarian, Icelandic, Indonesian, Irish, Italian, Japanese, Kabyle, Korean, Lithuanian, Lower Sorbian, Norwegian (Bokmål), Norwegian (Nynorsk), Polish, Portuguese (Brazilian), Portuguese (Portugal), Romanian, Romansh, Russian, Serbian, Sinhala, Slovak, Slovenian, Spanish (Argentina), Spanish (Spain), Swedish, Turkish, Ukrainian, Upper Sorbian, Vietnamese, Welsh. | |
| Type | Personal information manager, Email client, Instant messaging client, News client, Feed reader |
| License | MPL-2.0 |
| Website | www |
| Repository | https://hg-edge.mozilla.org/ |
Mozilla Thunderbird is a free and open-source personal information manager primarily used as an e-mail client with a calendar and contactbook, as well as an RSS feed reader, chat client (IRC/XMPP/Matrix), and news client. Operated by MZLA Technologies Corporation, a subsidiary of the Mozilla Foundation, Thunderbird is an independent, community-driven project that is managed and overseen by the Thunderbird Council, which is elected by the Thunderbird community. As a cross-platform application, Thunderbird is available for Windows, macOS, FreeBSD, Android, and Linux. The project strategy was originally modeled after that of Mozilla's Firefox, and Thunderbird is an interface built on top of that Web browser.