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

Thunderbird (64-bit)

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Thunderbird 115.4.3 (64-bit)

  -  57.3 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 115.4.3 (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 115.4.3 (64-bit)

  • Thunderbird 115.4.3 (64-bit) Screenshots

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    Thunderbird 115.4.3 (64-bit) Screenshot 1
  • Thunderbird 115.4.3 (64-bit) Screenshot 2

What's new in this version:

Fixed:
- Forwarding multiple messages as attachments failed
- Message list scrolling fixes
- Some text remained incorrectly visible in the message list when using "Grouped By" sorting
- Subject lines were excessively indented in "Grouped by" views
- "Open Message in Conversation" was incorrectly enabled for selections of multiple messages
- States of collapsed and expanded threads were not maintained when switching folders
- Pressing "n" to move to the next unread message on an unread, collapsed thread opened the thread and selected the second message instead of the first
- Search Folders dialog improvements
- "Read Messages" button in Account Central did not retrieve mail from POP accounts
- Events canceled by the organizer were incorrectly sent cancelation message

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