Thunderbird
Thunderbird combines email, calendars, and contacts in a customizable application.
About Thunderbird
Thunderbird is an application for handling email alongside calendars and contacts. It lets users filter and organize messages, manage accounts separately or in a unified inbox, and adjust visual preferences and workflow.
Downloads are listed for Windows, macOS, Linux, and Android via Google Play and F-Droid, with several Windows and Linux builds including 32-bit, 64-bit and MSI options.
Key features
- Combine email, calendars, and contacts in one app
- Manage accounts separately or in a unified inbox
- Filter and organize messages
- Customize layout and workflow preferences
- Download desktop builds for Windows, macOS, and Linux
Best for: People who manage several email accounts and want calendars, contacts, and inbox organization in one customizable app.
Good for
- States it is funded by user donations and does not sell ads in the inbox
- States it does not collect personal data or train AI on private conversations
- Offers separate and unified inbox options with filtering
Thunderbird at a glance
- Website
- thunderbird.net/en-US
- Category
- Productivity › Email Tools
- Type
- Online tool
- Pricing
- Not confirmed. Check the site
- Platforms
- Android, Linux, Web, Windows
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 5, 2026 · Automated check blocked
- Listed
- Oct 5, 2026
Guides for Email Tools
Thunderbird alternatives
Tools and sites you could use instead, ranked by how closely they match.
FiloMail combines email and to-dos across multiple accounts, with task reminders, thread summaries, and reply assistance.
Twobird combines email, notes, reminders, and to-do assignments in one inbox.
An alternative build of Mozilla Thunderbird adds tuning and additional changes for its users.
Use eM Client to manage email accounts from a desktop application on Windows or Mac.
I.UA combines Ukrainian email with weather, finance, radio and news on a portal homepage.
Dove provides Thunderbird configurations and modifications focused on privacy, security, usability, and user control.
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Thunderbird FAQ
Which platforms have Thunderbird downloads listed?
Windows, macOS, Linux, and Android through Google Play and F-Droid, including 32-bit, 64-bit, MSI, and older Windows builds.
What can I do if the donation page does not load?
The site notes a browser or extension may block Fundraise Up and suggests trying a different browser or temporarily disabling the extension.
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