What is Thunderbird?
Thunderbird is a free email application designed to free your inbox. Access all your messages, calendars, and contacts in one fast app. Filter and organize the way you like, managing all accounts separately or in a unified inbox. As part of the Mozilla family, Thunderbird puts privacy first – funded by user donations with no personal data collection, no ads in your inbox, and no secret AI training on your conversations. The open-source codebase ensures transparency. Thunderbird is clean and elegant by default but easily customizable with powerful features. Now with Thunderbird Mobile for Android and F-Droid, take your privacy-respecting email anywhere.
Key Features
- ✓Unified inbox for all accounts
- ✓Calendar and contacts built-in
- ✓Customizable interface
- ✓Powerful filtering and organization
- ✓No ads or data collection
- ✓Open-source and auditable
- ✓Mobile apps (Android, F-Droid)
- ✓Add-ons and themes
- ✓End-to-end encryption (OpenPGP)
- ✓RSS feed reader
- ✓Cross-platform (Windows, macOS, Linux)
- ✓Mozilla Foundation backed
🔒 Privacy & Data Protection
Thunderbird is funded entirely by donations – no personal data collection, no ad selling, no AI training on your conversations. Open-source code means complete transparency. Part of the Mozilla Foundation, Thunderbird inherits Mozilla's commitment to internet privacy. Your emails stay on your own devices when using local storage. For users wanting Gmail/Outlook desktop alternatives without data harvesting, Thunderbird delivers privacy you can trust.
Best For
💰 Pricing
Thunderbird is completely free and open-source. Donations support ongoing development but are entirely optional.
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