Changes

If you can handle the some risk**, a fantastic way to help speed the development process and improve the Thunderbird's quality of Thunderbird is to continuously run an [http://www.mozillamessaging.com/en-US/thunderbird/early_releases/ early release] or [ftp://ftp.mozilla.org/pub/thunderbird/nightly/latest-comm-1.9.12/ nightly build] and submit bugs for problems that you find. And [http://forums.mozillazine.org/viewforum.php?f=29 talking to other nightly users is easy].

'''** Ability to "handle the risk" means you have great backups of your profiles and mail store, and have some tolerance for risk. ''' Dataloss is rare - , but it can occuris a possibility. Stability is amazingly great, but not guaranteed. And of course, fixes to bugs in these releases builds don't come overnight. But many people run these unsupported builds.'''Nightlies and some early releases are code named Shredder. Shredder is an unbranded state of Thunderbird code base. Development code eventually ships as a future version, like 3.2.

Some extensions won't work in development builds. But many do if you use the right download for trunk or nightly, like enigmail and [http://www.mozilla.org/projects/calendar/lightning/download.html calendar]work if you use the right download for trunk or nightly. Many will work if you override the version checkand carefully test. The most controlled way to determine what works is override Determine one at a time, which work using [https://addons.mozilla.org/en-US/thunderbird/addon/6543 Nightly Tester Tools extension]. Also, it is possible to You can also [http://kb.mozillazine.org/Run_multiple_copies_of_Thunderbird_at_the_same_time run the current "production" version of Thunderbird at the same time].

Nightlies and some early releases are code named Shredder. Shredder is an unbranded state of Thunderbird code base. This development code built on comm-1.9.1 will eventually ship as Thunderbird version 3.0. See what fixes have checked in at [http://hg.mozilla.org/comm-central/ comm-central] and watch the changes via [http://hg.mozilla.org/comm-central/atom-log RSS]. The [http://forums.mozillazine.org/viewforum.php?f=29 Daily Build Threadsforum] is also a good source of information.