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Betterbird

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Betterbird

Free

Free software; Mozilla Public License; no warranty

Every plan, in full

On the record

App coverage
desktopbetterbird.eu · read 20 Sep 2026
Calendar tools
Yesbetterbird.eu · read 20 Sep 2026
Code signing
The project says Windows binaries have been signed with a code-signing certificate since February 2026.betterbird.eu · read 11 Oct 2026
Compatibility
Betterbird is designed to share a profile with the matching Thunderbird ESR version, though Thunderbird does not recognize Betterbird complex search terms.betterbird.eu · read 11 Oct 2026
Data handling
Betterbird says email content is sent to the user's configured mail servers and not to Betterbird, Mozilla, or unrelated external servers.betterbird.eu · read 11 Oct 2026
Integrations
The project says 98% of add-ons that run in Thunderbird will run in Betterbird, and add-ons can be installed from addons.thunderbird.net.betterbird.eu · read 11 Oct 2026
Limits
The project says profiles on network drives are only partly supported and profiles in Dropbox folders do not work.betterbird.eu · read 11 Oct 2026
Mail handling
Features include changing message threading, attaching recent files, and showing attachments above the message.betterbird.eu · read 11 Oct 2026
Mail views
Betterbird includes a multi-line message view, vertical tabs, account colors, and additional window layouts.betterbird.eu · read 11 Oct 2026
Product
Betterbird is a fine-tuned soft fork of Mozilla Thunderbird that follows Thunderbird Extended Support Releases.betterbird.eu · read 11 Oct 2026
Purpose
The project aims to improve the Thunderbird user experience by fixing bugs and adding features.betterbird.eu · read 11 Oct 2026
Search
Betterbird supports complex search terms and regular expressions in search terms.betterbird.eu · read 11 Oct 2026
Security
The project says no telemetry or crash reports are submitted, while add-on updates and blocklists are downloaded from Mozilla sites.betterbird.eu · read 11 Oct 2026
Security updates
The project warns against using old versions because they have unpatched security vulnerabilities.betterbird.eu · read 11 Oct 2026
Scheduled sending
Yesbetterbird.eu · read 20 Sep 2026
Source code
The project administers a public GitHub repository for its Betterbird changes to Thunderbird.betterbird.eu · read 11 Oct 2026
Support
The team helps with bugs but says it cannot provide ordinary account setup, profile management, configuration, or individual troubleshooting support for free.betterbird.eu · read 11 Oct 2026
Unified inbox
Yesbetterbird.eu · read 20 Sep 2026

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