Install Latest Mozilla Thunderbird in Ubuntu 12.10 Quantal/Ubuntu 12.04 Precise/Ubuntu 11.10 Natty/Any Ubuntu Version/Linux Mint 13/12/10/Others

Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!
Fixes in Thunderbird
  • Multi-Channel Chat: You now can enjoy real time conversation with your contacts, right from your favorite messaging application.
  • Do Not Track: This option has been implemented as an addition to Search the Web.
  • Ubuntu One is now supported in Filelink - the option to upload large attachments to online storage services.
  • New User Interface: Thunderbird is replicating the new look and feel of Mozilla Firefox in an effort to provide a similar user experience across all Mozilla software desktop or mobile and all platforms.
  • Various fixes and performance improvements
  • Various security fixes

To install Thunder Bird 15 on Ubuntu/Linux Mint open Terminal (Press Ctrl+Alt+T) and copy the following commands in the Terminal:
That's it
Download ThunderBird 15 Source from Here, Also check this page for other OS.
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