Markov Dictionary Switcher 1.0
by Freek Zindel
Based on Dictionary Switcher but more than a thousand times faster and you can choose dictionaries that you want to use. Detects the language of the message that you are composing and changes the spelling dictionary.
This add-on has been preliminarily reviewed by Mozilla. Learn more
This add-on is not compatible with your version of Thunderbird because of the following: