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

Thunderbird (64-bit)

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Thunderbird 115.3.0 (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 115.3.0 (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 115.3.0 (64-bit)

  • Thunderbird 115.3.0 (64-bit) Screenshots

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    Thunderbird 115.3.0 (64-bit) Screenshot 1
  • Thunderbird 115.3.0 (64-bit) Screenshot 2

What's new in this version:

Fixed:
- Thunderbird could not import profiles with hostname ending in dot (".")
- Message header was occasionally missing in message preview
- Setting an existing folder's type flag did not add descendant folders to the Unified Folders view
- Thunderbird did not always delete all temporary mail files, sometimes preventing messages from being sent
- Status bar in Message Compose window could not be hidden
- Message header was intermittently missing from message preview
- OAuth2 did not work on some profiles created in Thunderbird 102.6.1 or earlier
- In Vertical View, decrypted subject lines were displayed as ellipsis ("...") in message list
- Condensed address preference (mail.showCondensedAddresses) did not show condensed addresses in message list
- Spam folder could not be assigned non-ASCII names with IMAP UTF-8 enabled
- Message header was not displayed until images finished loading, causing noticeable delay for messages containing large images
- Large SVG favicons did not display on RSS feeds
- Context menu items did not display a hover background color

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