How to Add a Dictionary to the Mozilla Thunderbird Spell Checker

If you compose your emails in Arabic, English, French and Icelandic, but your Mozilla Thunderbird's spell checker only finds fault with your English, that's a pity.

Given how useful spell checking can be especially with languages other than your native, Mozilla Thunderbird should really be able to learn new tongues. Fortunately, it can. All it needs is the proper dictionary.

Add a Dictionary to the Mozilla Thunderbird Spell Checker

To install a new language for the Mozilla Thunderbird spell checker:

• Open Mozilla Thunderbird.
• Select Tools | Add-ons from the menu.
• Open your browser.
• Go to the Mozilla Thunderbird dictionaries page.
• Drag and drop the desired Install link to Mozilla Thunderbird's Add-ons window.
• Switch to the Add-ons window.
• Click Install Now in the Software Installation dialog.
• Now click Restart Thunderbird.

You can use the new dictionary by selecting it from the Spell drop-down menu (click the down arrow) while composing a message.