Mozilla Thunderbird 159.0

Mozilla Foundation ❘ 127.7MB ❘ Open Source ❘
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<h3>Mozilla Thunderbird: Open-Source Email and Calendar Client</h3><p>Mozilla Thunderbird is a free, open-source email client developed within the Mozilla ecosystem. It runs on Windows, macOS and Linux, and is available on Android as Thunderbird Mobile. The application emphasizes privacy, encryption and extensibility while supporting traditional desktop workflows. Official installers, language builds and archived releases are distributed through Mozilla’s Thunderbird sites and CDN, and MSI packages are provided for managed deployments.</p><h3>Core features</h3><ul><li><em>Cross-platform support:</em> Native installers for Windows, macOS and Linux, with MSI packages for enterprise use and archived builds available from Mozilla’s release servers.</li><li><em>Multi-account mail handling:</em> IMAP, POP3 and SMTP account support, a unified inbox option and automated setup for major providers.</li><li><em>Integrated calendar and tasks:</em> Built-in calendar and to-do management with CalDAV synchronization, so a separate calendar application is not required.</li><li><em>Encryption and signing:</em> Native OpenPGP support and S/MIME options provide message encryption and digital signatures.</li><li><em>Message management:</em> Filters, message tagging, saved searches, attachment search and indexing help organize large inboxes.</li><li><em>Privacy and security protections:</em> Adaptive junk mail controls, remote content blocking, phishing protection and configurable telemetry and privacy settings.</li><li><em>Add-on ecosystem:</em> Support for MailExtensions-style add-ons, themes and extensions that customize workflows and the interface.</li><li><em>Release channels and archives:</em> Regular stable updates, Extended Support Release (ESR) options and an archive of historic releases and changelogs.</li></ul><h3>Practical appeal</h3><ul><li><em>Open-source governance:</em> The project is funded by user donations and has no embedded advertising or inbox data sales.</li><li><em>Privacy-oriented defaults:</em> Remote content and trackers are blocked by default, alongside built-in encryption tools.</li><li><em>Suitability for power users and IT:</em> Configurable filters, import and export tools, archiving options and MSI installers serve both individual power users and enterprise deployments.</li><li><em>Customizability:</em> Layout options, toolbar adjustments and a wide range of extensions allow adaptation to different workflows and preferences.</li><li><em>Update documentation:</em> Per-release notes and regional download pages describe fixes, security updates and feature changes, with installers served from Mozilla’s official CDN.</li></ul><h3>Limitations and considerations</h3><ul><li><em>Focus on email and calendaring:</em> Thunderbird does not include integrated document editing or persistent team chat.</li><li><em>Extension compatibility:</em> API changes and major version upgrades may affect legacy add-ons, so checking compatibility and release notes before upgrading is advisable.</li><li><em>Desktop-oriented design:</em> The interface follows a traditional desktop client model. Users who want a webmail-style or modern browser look may need themes or extensions to achieve it.</li></ul><h3>Installation, updates and release management</h3><ul><li><em>Official downloads and archives:</em> Stable installers, language packs and historic releases are available from Thunderbird’s website and the Mozilla CDN.</li><li><em>Update options:</em> Automatic security and stability updates are supported, while manual installers and MSI packages allow administrators to control rollouts.</li><li><em>Release notes and ESR:</em> Detailed changelogs accompany stable and ESR releases, helping with upgrade planning and tracking of fixes and behavioral changes.</li><li><em>Mobile availability:</em> Thunderbird Mobile for Android applies the same privacy-focused approach to mobile devices and is distributed through standard Android app channels.</li></ul>

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6,817 users of UpdateStar had Mozilla Thunderbird installed last month.

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159.0

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