Firefox spellcheck for BT Mail,

Hello, First, to test, open a new draft in BT mail, right click the large text box, and make sure there is a checkmark next to check spelling (just to be sure). If a language submenu appears, make sure it is your selected language. Secondly, you can try going to the firefox Dictionaries Add-ons Page, then install your preferred language and click Add to Firefox. After that, restart firefox and check if the squiggly lines reappear while typing a draft. Lastly, you can try going to about:config, and press enter. (USE AT OWN discretion), accept warning message, and then type "layout.spellcheckDefault" and set it from 1 to 2.