How it would work: A user installs the "Thunderbird AI Suite" add-on from the official repository. The add-on adds new buttons to the composition toolbar: "AI Assist," "Translate," "Improve Tone," etc. It also adds options to the right-click context menu in the email list and reading pane. When you click a function, the add-on sends the selected text (or the entire draft) to an AI API (like OpenAI's GPT, Google's Gemini, or Anthropic's Claude). The processed result is then r...