Betterbird v140.13.0esr-bb25 - Free Download



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 Home » OlderGeeks.com Freeware Downloads » Email Programs, Utilities and News Readers » Betterbird v140.13.0esr-bb25   
File - Download Betterbird v140.13.0esr-bb25
Description
A plea...
Deanna and I have been running this site since 2008 and lately we're seeing a big increase in
users (and cost) but a decline in percentage of users who donate. Our ad-free and junkware-free
download site only works if everyone chips in to offset the revenue that ads on other sites bring
in. Please donate at the bottom of the page. Every little bit helps. Thank you so much.
Sincerely,
your Older Geeks: Randy and Deanna



Always scroll to the bottom of the page for the main download link.
We don't believe in fake/misleading download buttons and tricks. The link is always in the same place.


Betterbird v140.13.0esr-bb25

👉 Fine-tuned Thunderbird-based email client with exclusive features, fixes, and productivity improvements.

Betterbird is a soft fork of Mozilla Thunderbird that closely follows Thunderbird ESR releases while adding exclusive features, bug fixes, and usability improvements designed to provide a better email experience. It can be installed alongside Thunderbird and even used with the same profile, making it easy to try without disrupting an existing setup. Betterbird adds capabilities such as multi-line message view, improved system tray support, enhanced search options, language pack support tailored for Betterbird, and a variety of workflow improvements for mail handling and organization.




Features:
• Fine-tuned Thunderbird ESR-based email client
• Can be installed alongside Thunderbird and used with the same profile
• Multi-line message view
• Full account colours support
• Attachments on top
• Complex search terms
• Regular expression search
• Search in encrypted messages
• Improved Windows and Linux system tray integration
• Activity Manager opens in a tab for easier tracking of message activity
• Betterbird-specific language packs for supported languages
• Support for custom icons
• Feed reader enhancements
• Header editing and rethreading tools
• Delayed background sending preference
• Windows binaries signed with a Certum certificate
• Web search option in the compose window context menu
• Password prompts can reveal passwords
• Portable version available for Windows

Supported operating systems:
• Windows 10 64-bit, Windows 11 64-bit
• Linux Mint 22, Ubuntu 22, Debian 12 Bookworm, compatible Linux distributions with GLIBC 2.35
• macOS Catalina, macOS Ventura, macOS Sonoma 14, macOS Sequoia 15 or higher

Supported languages:
• English (en-US), English (en-GB), German, Dutch, French, Italian, Japanese, Spanish (es-ES), Portuguese (pt-BR), Russian, Chinese (Simplified), Czech, Polish, Swedish, Ukrainian

Changes:
v140.9.0esr-bb20 07-20-26
Based on Thunderbird 153.0esr.
Fixed in this version:
NEW - Support for "close to tray" while maintaining "minimise to tray", see this blog article for details
CHANGED - Images in links are again zoomable controlled by preference mail.allow_zooming_image_links
CHANGED - Integration with Thundermail disabled, see this blog article for details. This includes removing the application menu entry.
FIXED - Placing native notifications onto the application screen with preference mail.notification.show_on_app_screen not reliable
FIXED - Spellcheck in calendar descriptions. This now follows the inline spellcheck preference mail.spellcheck.inline and the dictionaries selected via preference spellchecker.dictionary (comma-separeated list) - Bug 1754162
FIXED - Missing space between HTML signature and quote when replying "on top" - Bug 2005898
FIXED - Calendar item description was black on black in dark mode if preference mail.dark-reader-compose.enabled was set to false
FIXED - Search in body of messages with encoding quoted-printable didn't work when message ended with a soft linebreak (=) - Bug 2054385
FIXED - 15 minor issues after an AI review of the entire Betterbird patch set of about 220 patches. Most visible was the erroneous hiding of the "All Tabs" button on overflow of the horizontal tabs bar.














This download is for the Windows Installer version (very bottom of page).
All other download assets are below:



Other Windows:
BetterbirdPortable-140.13.0esr-bb25.en-US.win64.zip

MacOS:
betterbird-140.13.0esr-bb25.en-US.mac.dmg
betterbird-140.13.0esr-bb25.en-US.mac-arm64.dmg
Mac builds are not notarized. Follow these instructions to run them.
Altenatively, run spctl --add /Applications/Betterbird.app in a terminal (Source).
(*): The ARM64 build for silicon Macs is experimental. If you receive an error "Betterbird" is damaged and can't be opened, run xattr -cr /Applications/Betterbird.app

Linux:
betterbird-140.13.0esr-bb25.en-US.linux-x86_64.tar.xz


Click here to visit the author's website.
Continue below for the main download link.


Downloads Views Developer Last Update Version Size Type Rank
3,848 13,786 betterbird.eu & Jorg Knobloch Jul 22, 2026 - 12:21 140.13.0esr-bb25 68.96MB EXE 5/5, out of 80 Votes.
File Tags
Betterbird  email  client  Thunderbird  mail  client  portable  email  client  email  client  email  client  email  client  email  email  client  RSS  contacts  calendar  SMTP  POP3  IMAP  OpenPGP  ESR  
      
Ope! Hold on, Speedy.
You gotta read this before you download below:

There are no ads, no fake download buttons and no crapware here.
This website has lived for 18 years solely through donations.
You can download without donating but we use the "Honor System"
here in the Ozarks. If your momma raised you to be honorable,
make your donation to keep things running.
Your momma would be so proud!

Thank you! -Randy & Deanna (The Older Geeks)
Missouri Ozarks, USA

Monthly operating costs = $750
Donations cover operating costs first
then are set aside for future upgrades and/or
handed-over to Deanna for new shoes.


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