Welcome to Thunderbird Add-ons.
Add extra features and styles to make Thunderbird your own.Close
United States English Spellchecker 8.0 No Restart
United States English Spellchecker for Firefox, Thunderbird and SeaMonkey by Kevin Atkinson and Geoff Kuenning.
To enable, right-click in a multi-line text box, select "Languages", then "English (United States)".
About this Add-on
The affix file is a heavily modified version of the original english.aff file which was released as part of Geoff Kuenning's Ispell and as such is covered by his BSD license.
I would remember to everybody that this extension provides only a United States English spellchecker, so if you're instead looking for a British English spellchecker, you can get it from https://addons.mozilla.org/en-US/firefox/addon/british-english-dictionary/
Please, _DO NOT_ ask for support here. If you need support, post your question to http://forums.mozillazine.org or to http://forum.mozillaitalia.org
Data comes from here: http://sourceforge.net/projects/wordlist/files/speller/2015.08.24/