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

Thunderbird (64-bit)

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Thunderbird 91.1.0 (64-bit)

  -  53.8 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 91.1.0 (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 91.1.0 (64-bit)

  • Thunderbird 91.1.0 (64-bit) Screenshots

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    Thunderbird 91.1.0 (64-bit) Screenshot 1
  • Thunderbird 91.1.0 (64-bit) Screenshot 2

What's new in this version:

- VCard attachments now sent with "text/vcard" instead of "text/x-vcard"

Fixed:
- Thunderbird registered Accessibility Handlers using same GUIDs as Firefox, causing performance issues for NVDA users
- Focus lost when reordering accounts by keyboard in the Account Manager
- Account setup did not use provider display name for setting up calendars
- Various theme and UX fixes
- Various security fixes

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