Thunderbird 6 for developers

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This content covers features introduced in Thunderbird 6

This page lists the changes in Thunderbird 6 that are relevant for developers. For changes that are relevant to end users, see http://support.mozillamessaging.com/kb/new-thunderbird-6/.

Gecko 6.0

Thunderbird 6 is based on Gecko 6.0. The Firefox 6 page has details on the significant changes to Gecko.

Changes for Mozilla and add-on developers

For helpful tips on updating existing extensions for Thunderbird 5, see Updating extensions for Firefox 4. There are several key changes that break compatibility with existing add-ons, so be sure to read that article.

 

Backend changes

 

Other Changes

 

More resources

Document Tags and Contributors

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 Contributors to this page: chrisdavidmills, trevorh, Sheppy, Potappo, Standard8
 Last updated by: chrisdavidmills,