அமைவுகள் Add-ons, extensions, and themes Enhance product functionality with add-ons, extensions, and themes. அனைத்தும் All articles and threads Import and export settings Add-ons, extensions, and themes ஆங்கிலத்தில் Filelink for Large Attachments Permission request messages for Thunderbird extensions Thunderbird add-ons - frequently asked questions Installing an Add-on in Thunderbird How to Install and Use another Language in the Dictionary on Thunderbird How to Customize Toolbars Install themes to change the look of Thunderbird userChrome.css and .js and userContent are unsupported Certificates Add-Ons FAQ Open Search Add Search Engine to Open Search How can I digitally sign and encrypt emails? How to Customize the New Mail Sound Installing and Using another Language in the Dictionary Unable to install add-ons (extensions or themes) in Thunderbird Unable to uninstall add-ons (extensions or themes) Unified Toolbar