diff --git a/config-overrides.js b/config-overrides.js
index 4826e3b..1058630 100644
--- a/config-overrides.js
+++ b/config-overrides.js
@@ -31,6 +31,7 @@ const extWebpack = (config, env) => {
     popup: paths.appSrc + "/popup.js",
     options: paths.appSrc + "/options.js",
     background: paths.appSrc + "/background.js",
+    backgroundthunderbird: paths.appSrc + "/background.thunderbird.js",
     content: paths.appSrc + "/content.js",
   };
 
diff --git a/package.json b/package.json
index 901efe1..387eb47 100644
--- a/package.json
+++ b/package.json
@@ -27,12 +27,13 @@
     "build:chrome": "rm -rf build/chrome && BUILD_PATH=./build/chrome REACT_APP_CLIENT=chrome react-app-rewired build && rm build/chrome/content.html",
     "build:edge": "rm -rf build/edge && cp -r build/chrome build/edge",
     "build:firefox": "rm -rf build/firefox && cp -r build/chrome build/firefox && cat ./build/firefox/manifest.firefox.json > ./build/firefox/manifest.json && rm build/*/manifest.firefox.json",
+    "build:thunderbird":"rm -rf build/thunderbird && cp -r build/chrome build/thunderbird && cat ./build/thunderbird/manifest.thunderbird.json > ./build/thunderbird/manifest.json && cp ./build/thunderbird/backgroundthunderbird.js ./build/thunderbird/background.js && rm build/*/manifest.thunderbird.json && rm build/*/backgroundthunderbird.js && rm build/*/backgroundthunderbird.js.LICENSE.txt", 
     "build:web": "rm -rf build/web && BUILD_PATH=./build/web REACT_APP_CLIENT=userscript react-app-rewired build",
     "build:userscript-ios": "file1=build/web/kiss-translator.user.js file2=build/web/kiss-translator-ios-safari.user.js && cp $file1 $file2 && sed -i 's|// @grant         unsafeWindow|// @inject-into   content|g' $file2",
     "build:userscript": "rm -rf build/userscript && mkdir build/userscript && cp build/web/*.user.js build/userscript/",
     "build:rules": "babel-node src/rules.js",
-    "build": "pnpm build:chrome && pnpm build:edge && pnpm build:firefox && pnpm build:web && pnpm build:userscript-ios && pnpm build:userscript && pnpm build:rules",
-    "zip": "cd build && zip -r chrome.zip chrome && zip -r edge.zip edge && cd firefox && zip -r ../firefox.zip .",
+    "build": "pnpm build:chrome && pnpm build:edge && pnpm build:firefox && pnpm build:thunderbird && pnpm build:web && pnpm build:userscript-ios && pnpm build:userscript && pnpm build:rules",
+    "zip": "cd build && zip -r chrome.zip chrome && zip -r edge.zip edge && (cd firefox && zip -r ../firefox.zip .) && (cd thunderbird && zip -r ../thunderbird.zip .)",
     "test": "react-app-rewired test",
     "eject": "react-scripts eject"
   },
diff --git a/public/manifest.thunderbird.json b/public/manifest.thunderbird.json
new file mode 100644
index 0000000..2aa3459
--- /dev/null
+++ b/public/manifest.thunderbird.json
@@ -0,0 +1,78 @@
+{
+  "manifest_version": 2,
+  "name": "__MSG_app_name__",
+  "description": "__MSG_app_description__",
+  "version": "1.8.11",
+  "default_locale": "en",
+  "author": "Gabe<yugang2002@gmail.com>",
+  "homepage_url": "https://github.com/fishjar/kiss-translator",
+  "browser_specific_settings": {
+    "gecko": {
+      "id": "yugang2002@gmail.com",
+      "strict_min_version": "78.0"
+    }
+  }, 
+  "background": {
+    "scripts": ["background.js"]
+  },
+  "content_scripts": [
+    {
+      "js": ["content.js"],
+      "matches": ["<all_urls>"],
+      "all_frames": true
+    }
+  ],
+  "commands": {
+    "_execute_browser_action": {
+      "suggested_key": {
+        "default": "Alt+K"
+      }
+    },
+    "toggleTranslate": {
+      "suggested_key": {
+        "default": "Alt+Q"
+      },
+      "description": "__MSG_toggle_translate__"
+    },
+    "openTranbox": {
+      "suggested_key": {
+        "default": "Alt+S"
+      },
+      "description": "__MSG_open_tranbox__"
+    },
+    "toggleStyle": {
+      "suggested_key": {
+        "default": "Alt+C"
+      },
+      "description": "__MSG_toggle_style__"
+    },
+    "openOptions": {
+      "description": "__MSG_open_options__"
+    }
+  },
+  "permissions": [
+    "<all_urls>",
+    "storage",
+    "menus",
+    "messagesModify", 
+    "scripting",
+    "declarativeNetRequest"
+  ],
+  "icons": {
+    "16": "images/logo16.png",
+    "32": "images/logo32.png",
+    "48": "images/logo48.png",
+    "128": "images/logo128.png"
+  },
+  "browser_action": {
+    "default_icon": {
+      "128": "images/logo128.png"
+    },
+    "default_title": "__MSG_app_name__",
+    "default_popup": "popup.html"
+  },
+  "options_ui": {
+    "page": "options.html",
+    "open_in_tab": true
+  }
+}
diff --git a/src/background.thunderbird.js b/src/background.thunderbird.js
new file mode 100644
index 0000000..7b8e29c
--- /dev/null
+++ b/src/background.thunderbird.js
@@ -0,0 +1,254 @@
+import browser from "webextension-polyfill";
+import {
+  MSG_FETCH,
+  MSG_GET_HTTPCACHE,
+  MSG_TRANS_TOGGLE,
+  MSG_OPEN_OPTIONS,
+  MSG_SAVE_RULE,
+  MSG_TRANS_TOGGLE_STYLE,
+  MSG_OPEN_TRANBOX,
+  MSG_CONTEXT_MENUS,
+  MSG_COMMAND_SHORTCUTS,
+  MSG_INJECT_JS,
+  MSG_INJECT_CSS,
+  MSG_UPDATE_CSP,
+  DEFAULT_CSPLIST,
+  CMD_TOGGLE_TRANSLATE,
+  CMD_TOGGLE_STYLE,
+  CMD_OPEN_OPTIONS,
+  CMD_OPEN_TRANBOX,
+} from "./config";
+import { getSettingWithDefault, tryInitDefaultData } from "./libs/storage";
+import { trySyncSettingAndRules } from "./libs/sync";
+import { fetchHandle, getHttpCache } from "./libs/fetch";
+import { sendTabMsg } from "./libs/msg";
+import { trySyncAllSubRules } from "./libs/subRules";
+import { tryClearCaches } from "./libs";
+import { saveRule } from "./libs/rules";
+import { getCurTabId } from "./libs/msg";
+import { injectInlineJs, injectInternalCss } from "./libs/injector";
+import { kissLog } from "./libs/log";
+
+globalThis.ContextType = "BACKGROUND";
+
+const REMOVE_HEADERS = [
+  `content-security-policy`,
+  `content-security-policy-report-only`,
+  `x-webkit-csp`,
+  `x-content-security-policy`,
+];
+
+/**
+ * 添加右键菜单
+ */
+async function addmenus(contextMenuType = 1) {
+  // 添加前先删除,避免重复ID的错误
+  try {
+    await browser.menus.removeAll();
+  } catch (err) {
+    //
+  }
+
+  switch (contextMenuType) {
+    case 1:
+      browser.menus.create({
+        id: CMD_TOGGLE_TRANSLATE,
+        title: browser.i18n.getMessage("app_name"),
+        contexts: ["page", "selection"],
+      });
+      break;
+    case 2:
+      browser.menus.create({
+        id: CMD_TOGGLE_TRANSLATE,
+        title: browser.i18n.getMessage("toggle_translate"),
+        contexts: ["page", "selection"],
+      });
+      browser.menus.create({
+        id: CMD_TOGGLE_STYLE,
+        title: browser.i18n.getMessage("toggle_style"),
+        contexts: ["page", "selection"],
+      });
+      browser.menus.create({
+        id: CMD_OPEN_TRANBOX,
+        title: browser.i18n.getMessage("open_tranbox"),
+        contexts: ["page", "selection"],
+      });
+      browser.menus.create({
+        id: "options_separator",
+        type: "separator",
+        contexts: ["page", "selection"],
+      });
+      browser.menus.create({
+        id: CMD_OPEN_OPTIONS,
+        title: browser.i18n.getMessage("open_options"),
+        contexts: ["page", "selection"],
+      });
+      break;
+    default:
+  }
+}
+
+/**
+ * 更新CSP策略
+ * @param {*} csplist
+ */
+async function updateCspRules(csplist = DEFAULT_CSPLIST.join(",\n")) {
+  try {
+    const newRules = csplist
+      .split(/\n|,/)
+      .map((url) => url.trim())
+      .filter(Boolean)
+      .map((url, idx) => ({
+        id: idx + 1,
+        action: {
+          type: "modifyHeaders",
+          responseHeaders: REMOVE_HEADERS.map((header) => ({
+            operation: "remove",
+            header,
+          })),
+        },
+        condition: {
+          urlFilter: url,
+          resourceTypes: ["main_frame", "sub_frame"],
+        },
+      }));
+    const oldRules = await browser.declarativeNetRequest.getDynamicRules();
+    const oldRuleIds = oldRules.map((rule) => rule.id);
+    await browser.declarativeNetRequest.updateDynamicRules({
+      removeRuleIds: oldRuleIds,
+      addRules: newRules,
+    });
+  } catch (err) {
+    kissLog(err, "update csp rules");
+  }
+}
+
+/**
+ * 插件安装
+ */
+browser.runtime.onInstalled.addListener(() => {
+  tryInitDefaultData();
+
+  // 右键菜单
+  addmenus();
+
+  // 禁用CSP
+  updateCspRules();
+});
+
+/**
+ * 浏览器启动
+ */
+browser.runtime.onStartup.addListener(async () => {
+  // 同步数据
+  await trySyncSettingAndRules();
+
+  const { clearCache, contextMenuType, subrulesList, csplist } =
+    await getSettingWithDefault();
+
+  // 清除缓存
+  if (clearCache) {
+    tryClearCaches();
+  }
+
+  // 右键菜单
+  // firefox重启后菜单会消失,故重复添加
+  addmenus(contextMenuType);
+
+  // 禁用CSP
+  updateCspRules(csplist);
+
+  // 同步订阅规则
+  trySyncAllSubRules({ subrulesList });
+});
+
+/**
+ * 监听消息
+ */
+browser.runtime.onMessage.addListener(async ({ action, args }) => {
+  switch (action) {
+    case MSG_FETCH:
+      return await fetchHandle(args);
+    case MSG_GET_HTTPCACHE:
+      const { input, init } = args;
+      return await getHttpCache(input, init);
+    case MSG_OPEN_OPTIONS:
+      return await browser.runtime.openOptionsPage();
+    case MSG_SAVE_RULE:
+      return await saveRule(args);
+    case MSG_INJECT_JS:
+      return await browser.scripting.executeScript({
+        target: { tabId: await getCurTabId(), allFrames: true },
+        func: injectInlineJs,
+        args: [args],
+        world: "MAIN",
+      });
+    case MSG_INJECT_CSS:
+      return await browser.scripting.executeScript({
+        target: { tabId: await getCurTabId(), allFrames: true },
+        func: injectInternalCss,
+        args: [args],
+        world: "MAIN",
+      });
+    case MSG_UPDATE_CSP:
+      return await updateCspRules(args);
+    case MSG_CONTEXT_MENUS:
+      return await addmenus(args);
+    case MSG_COMMAND_SHORTCUTS:
+      return await browser.commands.getAll();
+    default:
+      throw new Error(`message action is unavailable: ${action}`);
+  }
+});
+
+/**
+ * 监听快捷键
+ */
+browser.commands.onCommand.addListener((command) => {
+  // console.log(`Command: ${command}`);
+  switch (command) {
+    case CMD_TOGGLE_TRANSLATE:
+      sendTabMsg(MSG_TRANS_TOGGLE);
+      break;
+    case CMD_OPEN_TRANBOX:
+      sendTabMsg(MSG_OPEN_TRANBOX);
+      break;
+    case CMD_TOGGLE_STYLE:
+      sendTabMsg(MSG_TRANS_TOGGLE_STYLE);
+      break;
+    case CMD_OPEN_OPTIONS:
+      browser.runtime.openOptionsPage();
+      break;
+    default:
+  }
+});
+
+/**
+ * 监听右键菜单
+ */
+browser.menus.onClicked.addListener(({ menuItemId }) => {
+  switch (menuItemId) {
+    case CMD_TOGGLE_TRANSLATE:
+      sendTabMsg(MSG_TRANS_TOGGLE);
+      break;
+    case CMD_TOGGLE_STYLE:
+      sendTabMsg(MSG_TRANS_TOGGLE_STYLE);
+      break;
+    case CMD_OPEN_TRANBOX:
+      sendTabMsg(MSG_OPEN_TRANBOX);
+      break;
+    case CMD_OPEN_OPTIONS:
+      browser.runtime.openOptionsPage();
+      break;
+    default:
+  }
+});
+/**
+ * 邮件显示中注册脚本
+ */
+async function registerMsgDisplayScript() {
+		await messenger.messageDisplayScripts.register({
+			js: [{file: "/content.js"}]
+		});
+	}
+registerMsgDisplayScript();
\ No newline at end of file