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

Thunderbird (64-bit)

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Thunderbird 115.5.2 (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 115.5.2 (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 115.5.2 (64-bit)

  • Thunderbird 115.5.2 (64-bit) Screenshots

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    Thunderbird 115.5.2 (64-bit) Screenshot 1
  • Thunderbird 115.5.2 (64-bit) Screenshot 2

What's new in this version:

Fixed:
- "Compact" option was missing from folder context menu for IMAP accounts using maildir
- Message list could not be properly read by screen readers in table view
- Messages with slow-loading images were delayed being marked as read
- Messages opened in background tab were incorrectly marked as read
- Mark All Read did not work for virtual folders
- Delete (trash icon) in message display did not work in Unified folders
- Unified folders were missing "Mark Folder Read" option in context menu
- "Reply to List" was incorrectly disabled in Unified Toolbar since Thunderbird 115.4.1
- Sorting by column with "Grouped By" enabled then performing a quick filter search caused blank message pane
- Attachment list did not always appear if remote message content loaded slowly
- Messages in outbox were not shown as unread by default
- "Apply columns to" sometimes failed to apply columns to a root folder and its descendants
- Global search results displayed as a list did not allow threads to be collapsed
- "Quick Filter" button on toolbar was disabled when viewing search results as a list
- Folder open hover delay was too short when using drag-and-drop
- Parent folders with collapsed subfolders did not consistently display new mail indicator or message count for subfolders
- Message list scroll position could move randomly when switching folders
- Undoing deletion of local messages required using "Undo" (Ctrl-Z) twice
- IMAP messages deleted in Thunderbird still appeared in other email clients that don't respect messages marked "deleted"
- IMAP folder discovery was slowed by status bar message updates
- Servers with non-LDH (letters-digits-hyphens) hostnames, such as those containing non-ASCII Unicode characters, could not be found
- Images could not be copied and pasted from one message into another
- Troubleshooting page (about:support) did not work on profiles with no outgoing email server, such as news-only profiles
- Minimize/maximize button order was incorrect when placing window titlebar buttons on left-hand side
- OpenPGP integraton with smartcard using latest version of Gpg4Win failed
- Various accessibility improvements
- Various UX and visual improvements

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