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

Thunderbird (32-bit)

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Thunderbird 1.5.0.5

  -  6.03 MB  -  Open Source

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 1.5.0.5.


For those interested in downloading the most recent release of Thunderbird (32-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!

  • Thunderbird 1.5.0.5 Screenshots

    The images below have been resized. Click on them to view the screenshots in full size.

    Thunderbird 1.5.0.5 Screenshot 1
  • Thunderbird 1.5.0.5 Screenshot 2

What's new in this version:

Security issues: (11)
- Fixed: 339740 - Heap buffer overwrite on malformed VCard (Critical)
- Fixed: 284219, 329900, 331679, 331883, 336162, 337462, 338129, 338391, 340733 - Crashes with evidence of memory corruption (rv:1.8.0.5) (Moderate)
- Fixed: 320982, 342507, Secunia Advisory 19873 - Memory corruption with simultaneous events (Moderate)
- Fixed: 324117, 325425, 336409, 336410, 338001, 338121, 338804, 339785, 340129, 341877, 341956, 342960 - JavaScript engine vulnerabilities (Moderate)
- Fixed: 337389 - PAC privilege escalation using Function.prototype.call (Moderate)
- Fixed: 338288 - Code execution through deleted frame reference (Moderate)
- Fixed: 338523 - XSS with XPCNativeWrapper(window).Function(...) (Moderate)
- Fixed: 340107 - UniversalBrowserRead privilege escalation (Moderate)
- Fixed: 340727 - Privilege escalation using named-functions and redefined "new Object()" (Moderate)
- Fixed: 344759, 344960 - JavaScript new Function race condition (Moderate)
- Fixed: 339918, 343594 - Native DOM methods can be hijacked across domains (Low)

Crash: (1)
- Fixed: 340882 - [XPToolkit] Invalid pointer in RemoveWindowListeners

Address book: (1)
- Fixed: 334947 - freeze if drop vCard with base64 encoded photo

Attachment-related: (1)
- Fixed: 338859 - even if the attachment file name has 0x2f, it's not escaped

Build configuration: (3)
- Fixed: 324483 - Ah Crap! takes too long
- Fixed: 339875 - ship ga-IE for 1.5.0.5
- Fixed: 343157 - unit test dirs are included in final packages

Functionality: (3)
- Fixed: 314009 - Draft messages not deleted when Send Later used
- Fixed: 337052 - Reactivate WarpCenter biff functionality in nsMessengerOS2Integration
- Fixed: 342167 - In , 2 "Warning: Expected pseudo-element but found '-moz-XYZ'. Ruleset ignored due to bad selector."

UI improvements: (1)
- Fixed: 342784 - File > Quit hangs tb if expunge inbox on exit is set

XPToolkit: (1)
- Fixed: 339213 - Software update fails because XULRunner doesn't ship updater.ini

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