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

Thunderbird (64-bit)

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Thunderbird 102.10.0 (64-bit)

  -  53.9 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 102.10.0 (64-bit).


For those interested in downloading the most recent release of Thunderbird (64-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 102.10.0 (64-bit)

  • Thunderbird 102.10.0 (64-bit) Screenshots

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    Thunderbird 102.10.0 (64-bit) Screenshot 1
  • Thunderbird 102.10.0 (64-bit) Screenshot 2

What's new in this version:

Changed:
- New messages will automatically select S/MIME if configured and OpenPGP is not

Fixed:
- Calendar events with timezone America/Mexico_City incorrectly applied Daylight Savings Time

Security fixes:
- CVE-2023-29532: Mozilla Maintenance Service Write-lock bypass
- CVE-2023-29533: Fullscreen notification obscured
- MFSA-TMP-2023-0001: Double-free in libwebp
- CVE-2023-29535: Potential Memory Corruption following Garbage Collector compaction
- CVE-2023-29536: Invalid free from JavaScript code
- CVE-2023-0547: Revocation status of S/Mime recipient certificates was not checked
- CVE-2023-29479: Hang when processing certain OpenPGP messages
- CVE-2023-29539: Content-Disposition filename truncation leads to Reflected File Download
- CVE-2023-29542: Bypass of file download extension restrictions
- CVE-2023-29545: Windows Save As dialog resolved environment variables
- CVE-2023-1945: Memory Corruption in Safe Browsing Code
- CVE-2023-29548: Incorrect optimization result on ARM64
- CVE-2023-29550: Memory safety bugs fixed in Thunderbird 102.10

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