تنظیمات Add-ons, extensions, and themes Enhance product functionality with add-ons, extensions, and themes. همه All articles and threads Import and export settings Customization Add-ons, extensions, and themes به انگلیسی Filelink for Large Attachments Permission request messages for Thunderbird extensions Thunderbird add-ons - frequently asked questions Install themes to change the look of Thunderbird How to Install and Use another Language in the Dictionary on Thunderbird How to Customize Toolbars Installing an Add-on in Thunderbird Certificates Add-Ons FAQ How can I digitally sign and encrypt emails? 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)