April 11th, 2013· The Twitter API has been updated to use v1.1, the current version (bug 857049)
· LDAP passwords are correctly saved again (bug 833971)
· Fix a memory leak when closing the compose window
· Various fixes and performance improvements
March 21st, 2013· Emails can now be sent to IDN based email addresses (bug 127399)
· Various fixes and performance improvements
February 20th, 2013· Security fixes can be found here
· Attachments sometimes could not be removed from the composition window using the keyboard, this is now fixed (799451)
January 9th, 2013· Security fixes can be found here
· Pressing the 'x' button on Windows now closes only one window rather than the whole application (805185)
· An issue that caused occasional corruption in local folders after filtering is now fixed (815012)
· An issue that caused deletion of drafts saved in IMAP folders whilst in offline mode is now fixed (805626)
November 21st, 2012· A Menu Button is now shown to new users by default
· Tabs are now drawn in the title bar on Windows
· An issue causing spell-checking only parts of words in Thunderbird 16 is now fixed (790475)
· An issue causing Thunderbird 16 to repeatedly download emails is now fixed (806760)
· RSS feeds can now be viewed in the Wide View Layout (531397)
· Various fixes and performance improvements
· Various security fixes
· Mac OS X 10.5 is no longer supported
October 10th, 2012· Box.com support added to Filelink
· Windows: Thunderbird is now easier to update with one less prompt (User Account Control)
· Thunderbird now supports silent, background updates
· Various fixes and performance improvements
August 28th, 2012· Integration of Chat with unified global search
· Do Not Track option has been added
· New Australis User Interface
· Ubuntu One has been added to the list of online storage providers for Filelink
· Various fixes and performance improvements
July 17th, 2012· Ubuntu One has been added to the list of online storage providers for Filelink
June 6th, 2012· Filelink: Send links rather than attachments and prevent bounce back due to large attachments.
May 11th, 2012· Filelink: Send links rather than attachments and prevent bounce back due to large attachments.
March 14th, 2012· New user interface with Tabs above the main menu bar to facilitate navigation and make it more contextual, and several other platform fixes.
December 27th, 2011· New ability to search the Web
· Improvements to searching email
· Create a new email account
· Several fixes when drafting email
· and several other platform fixes
December 21st, 2011· Added an opt-in system for users to send performance data back to Mozilla to improve future versions of Thunderbird
· Better keyboard handling for attachments
· Windows users can hide the menu bar (and show it with the "alt" key)
· Several user interface fixes and improvements
· and numerous other platform fixes
November 17th, 2011· Added an opt-in system for users to send performance data back to Mozilla to improve future versions of Thunderbird
· Better keyboard handling for attachments
· Windows users can hide the menu bar (and show it with the "alt" key)
· Several user interface fixes and improvements
· and numerous other platform fixes
November 8th, 2011· Thunderbird is based on the new Mozilla Gecko 8 engine
· Add-ons installed by third party programs are now disabled by default
· New Search and Find Shortcuts
· Improved accessibility of the attachment list
· Folder switching pane widget removed
· Numerous platform fixes to stability
· Fixed several security issues
October 5th, 2011· Add-ons installed by third party programs are now disabled by default
· Added a one-time add-on selection dialog to manage previously installed add-ons
· Improved accessibilty of the attachment lists
· Several user interface fixes and improvements
· and numerous other platform fixes
June 3rd, 2011· New Addons Manager and extension management API (user interface will be changed before final release)
· Tabs can now be reordered and dragged to different windows
· Revised account creation wizard, offering improved set-up
· Attachment sizes now displayed along with attachments
· New troubleshooting information page to aid supporting and diagnosing problems in Thunderbird
· Plugins can now be loaded in RSS feeds by default
· Various other user interface fixes and improvements
· Support for Mac 32/64 bit Universal builds (Thunderbird Beta will no longer support PowerPC on Mac)
· and numerous other bug fixes
March 16th, 2011· Tabs can now be reordered and dragged to different windows
· Revised account creation wizard, offering improved set-up
· Plugins can now be loaded in RSS feeds by default
· and numerous other bug fixes
January 21st, 2011· Notable changes in Miramar Alpha 2 from Miramar Alpha 1
· New Troubleshooting information page to aid supporting and diagnosing problems in Thunderbird
· Notifications of add-on installation progress and issues now work correctly
· Attachment reminder now works again
· Attachment sizes are now available in the compose window
· and numerous other bug fixes
· Notable changes in Miramar Alpha 2 when compared to Thunderbird 3.1
· New Addons Manager and extension management API (user interface will be changed before final release)
· Attachment sizes now displayed along with attachments
· Several user interface fixes for Windows Vista/Windows 7
· Support for Mac 32/64 bit Universal builds ( will no longer support PowerPC on Mac)
· Over 280 platform fixes to improve performance and stability
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