www.Tran is a Firefox and Thunderbird translator that allows to translate text by a few engines in the same time or any you like to use. It supports Drag & Drop operations for source and translated texts.
Great feature - one click translation of the selected text together with On the fly option.
How to Install in Thunderbird:
1. Right-click the link below and choose "Save Link As..." to download and save the file to your hard disk.
2. In Mozilla Thunderbird, open Add-ons from the Tools menu.
3. Click the Install button, and locate/select the file you downloaded and click "OK".
Product's homepage
Requirements:
· Mozilla Thunderbird
What's New in This Release: [ read full changelog ]
· added Options window for hotkey choosing
· default languages are chosen according to the browser preferences
· bugs fixed