A free email application from Mozilla that's easy to set up and customize

Thunderbird (32-bit)
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Thunderbird 138.0 (32-bit)

  -  66.2 MB  -  Open Source
Free Download

Security Status

Sometimes latest versions of the software can cause issues when installed on older devices or devices running an older version of the operating system.

Software makers usually fix these issues but it can take them some time. What you can do in the meantime is to download and install an older version of Thunderbird 138.0 (32-bit).


For those interested in downloading the most recent release of Thunderbird (32-bit) or reading our review, simply click here.


All old versions distributed on our website are completely virus-free and available for download at no cost.


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If you have any questions or ideas that you want to share with us - head over to our Contact page and let us know. We value your feedback!

Download Thunderbird 138.0 (32-bit)
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  • Thunderbird 138.0 (32-bit) Screenshots

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    Thunderbird 138.0 (32-bit) Screenshot 1
  • Thunderbird 138.0 (32-bit) Screenshot 2

What's new in this version:

New:
- New mail alert now includes message disposition buttons
- New mail notification customization added to macOS Settings

Changed:
- Changed color override defaults with high contrast mode on macOS and Linux

Fixed:
- macOS notifications displayed two logos
- Message preview truncation in notifications improved
- Wrong day of week displayed for some emails
- In dark mode with light theme, message reader still displayed in dark mode
- Message link and text colors were incorrect when using Dark Reader
- Unchecking "Show all headers" in Message Header Settings closed dialog
- Address book did not match users when case differed in some instances
- Menu items to manage folders were not disabled in offline mode
- Using Delete column in "Search Messages..." window could delete other messages
- Ctrl or Shift selecting multiple messages reset when dragging across a message
- Newsgroups could no longer be re-ordered in the folder tree via drag and drop
- Windows users with non-ASCII folder names and profile paths could not view emails
- OpenPGP key was not updated when accepted key was reimported with new identities
- Dual signed (PGP and S/MIME) emails were not displayed
- Notification duration preference enabled when system notifications were enabled
- Thunderbird could crash when adaptive message filtering was enabled
- CardDAV synchronization to Zimbra server failed
- Keyboard navigation was not possible when first header button was disabled
- Folders missing from view when "Show only subscribed folders" was not selected
- Nickserv messages appeared during successful authentication
- Global indexing failed when processing email with invalid calendar data
- Clicking a mid: link in Calendar opened two copies of the message
- Some calendar requests were blocked due to opaque response blocking
- Visual and UX improvements
- Security fixes

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