diff --git a/.gitignore b/.gitignore
index 781dce0..3772294 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@ node_modules
 .DS_*
 package-lock.json
 dist/
+.idea/
diff --git a/app/converse-plugins/desktop-credentials.js b/app/converse-plugins/desktop-credentials.js
index 08b0a24..b3ac722 100644
--- a/app/converse-plugins/desktop-credentials.js
+++ b/app/converse-plugins/desktop-credentials.js
@@ -1,5 +1,4 @@
-const { addCredentials } = require('../credentials.js');
-const { getCredentials, removeCredentials } = require('../credentials.js');
+const credentials = await import('../credentials.js');
 
 converse.plugins.add('converse-desktop-credentials', {
 
@@ -9,7 +8,7 @@ converse.plugins.add('converse-desktop-credentials', {
 
         api.listen.on('afterResourceBinding', () => {
             if (_converse.connection.pass) {
-                addCredentials(
+                credentials.addCredentials(
                     converse.connectionManager,
                     _converse.bare_jid,
                     _converse.connection.pass
@@ -18,7 +17,7 @@ converse.plugins.add('converse-desktop-credentials', {
         });
 
         api.listen.on('logout', () => {
-            getCredentials().then((result) => removeCredentials(result.login))
+            credentials.getCredentials().then((result) => credentials.removeCredentials(result.login))
         });
     }
 });
diff --git a/app/converse-plugins/desktop-trayicon.js b/app/converse-plugins/desktop-trayicon.js
new file mode 100644
index 0000000..c63c627
--- /dev/null
+++ b/app/converse-plugins/desktop-trayicon.js
@@ -0,0 +1,24 @@
+/* global api */
+
+converse.plugins.add('converse-desktop-trayicon', {
+
+    initialize() {
+        const {_converse} = this;
+        let envelopeIsShowing = false;
+
+        function hideEnvelope() {
+            if (envelopeIsShowing) {
+                api.trayService.hideEnvelope();
+                envelopeIsShowing = false;
+            }
+        }
+
+        window.addEventListener('focus', hideEnvelope);
+        _converse.api.listen.on('chatBoxInitialized', hideEnvelope);
+        _converse.api.listen.on('chatBoxFocused', hideEnvelope);
+        _converse.api.listen.on('messageNotification', () => {
+            api.trayService.showEnvelope();
+            envelopeIsShowing = true;
+        });
+    }
+});
diff --git a/app/credentials.js b/app/credentials.js
index ce0e9dd..fb2f17b 100644
--- a/app/credentials.js
+++ b/app/credentials.js
@@ -1,48 +1,32 @@
-/* global require, module */
+/* global api */
 
-const settings = require('electron-settings');
-const keytar = require('keytar')
-
-function addCredentials (connectionManager, login, password) {
+async function addCredentials(connectionManager, login, password) {
     const xmppService = login.split('@').pop()
-    settings.setSync('connectionManager', connectionManager)
-    settings.setSync('login', login)
-    keytar.setPassword(xmppService, login, password)
+    await api.settings.set('connectionManager', connectionManager)
+    await api.settings.set('login', login)
+    await api.keytar.setPassword(xmppService, login, password)
 }
 
-function getCredentials () {
+async function getCredentials() {
     const credentials = {}
-    credentials.login = settings.getSync('login')
-    return new Promise((resolve) => {
-        if (credentials.login) {
-            credentials.connectionManager = settings.getSync('connectionManager')
-            credentials.xmppService = credentials.login.split('@').pop()
-            let password = keytar.getPassword(credentials.xmppService, credentials.login)
-            password.then((result) => {
-                credentials.password = result
-                resolve(credentials)
-            })
-        } else {
-            resolve({});
-        }
-    });
+    credentials.login = await api.settings.get('login')
+    if (credentials.login) {
+        credentials.connectionManager = await api.settings.get('connectionManager') || null
+        credentials.xmppService = credentials.login.split('@').pop()
+        credentials.password = await api.keytar.getPassword(credentials.xmppService, credentials.login)
+    }
+
+    return credentials;
 }
 
-function removeCredentials (login) {
-    const xmppService = login.split('@').pop()
-    const passwordDelete = keytar.deletePassword(xmppService, login)
-    return new Promise((resolve, reject) => {
-        passwordDelete.then(() => {
-            settings.unsetSync('login')
-            settings.unsetSync('connectionManager')
-            resolve()
-        }, (error) => {
-            reject(error)
-        })
-    })
+async function removeCredentials(login) {
+    const xmppService = login.split('@').pop();
+    await api.keytar.deletePassword(xmppService, login);
+    await api.settings.unset('login');
+    await api.settings.unset('connectionManager');
 }
 
-module.exports = {
+export {
     addCredentials,
     getCredentials,
     removeCredentials
diff --git a/index.html b/index.html
index 44f8030..ee71c65 100644
--- a/index.html
+++ b/index.html
@@ -17,24 +17,9 @@
             <div id="conversejs-bg"></div>
         </div>
     </div>
-
-    <!--
-      @see comment https://github.com/signalapp/libsignal-protocol-javascript/issues/6#issuecomment-247208665
-    -->
-    <script>
-        window.nodeRequire = require
-        delete window.require
-    </script>
     <!-- Place libsignal at libs dir as it's no more distributed with converse.js -->
     <script src="./3rdparty/libsignal-protocol.js"></script>
-    <script>
-        window.require = window.nodeRequire
-        delete window.nodeRequire
-    </script>
-    <script>
-        // You can also require other files to run in this process
-        require('./node_modules/converse.js/dist/converse.js')
-        require('./setup.js')
-    </script>
+    <script src="./node_modules/converse.js/dist/converse.js"></script>
+    <script type="module" src="./setup.js"></script>
 </body>
 </html>
diff --git a/main.js b/main.js
index b5470ae..cc64f60 100644
--- a/main.js
+++ b/main.js
@@ -1,5 +1,6 @@
 // Modules to control application life and create native browser window
 const { app, BrowserWindow, ipcMain, shell } = require('electron')
+const path = require('path');
 
 // Keep a global reference of the window object, if you don't, the window will
 // be closed automatically when the JavaScript object is garbage collected.
@@ -26,9 +27,7 @@ function createWindow () {
     const mainWindowOptions = {
         zoomToPageWidth: true,
         webPreferences: {
-            nodeIntegration: true,
-            contextIsolation: false,
-            enableRemoteModule: true
+            preload: path.join(__dirname, 'preload.js')
         },
         icon: './resources/images/logo.png',
     }
@@ -88,6 +87,14 @@ function createWindow () {
         e.preventDefault()
         shell.openExternal(url)
     })
+
+    ipcMain.handle('settings', (e, method, ...args) => {
+        return settingsService[method].apply(settingsService, args);
+    });
+
+    ipcMain.handle('trayService', (e, method, ...args) => {
+        return trayService[method].apply(trayService, args);
+    });
 }
 
 // This method will be called when Electron has finished
diff --git a/modules/menu-service.js b/modules/menu-service.js
index 2a9fd23..4e18122 100644
--- a/modules/menu-service.js
+++ b/modules/menu-service.js
@@ -1,16 +1,18 @@
 /**
  * Module for Menu functions.
  */
-const {app, Menu, BrowserWindow} = require('electron')
+const {app, Menu, MenuItem, BrowserWindow} = require('electron')
 const settingsService = require(__dirname + '/../modules/settings-service')
 
 const menuService = {}
 
 
 menuService.createMenu = () => {
-    const application = {
-        label: 'Converse Desktop',
-        submenu: [
+    let converse;
+    const application = new Menu();
+    application.append(new MenuItem({
+        label: 'Converse Desktop'
+        , submenu: converse = Menu.buildFromTemplate([
             {
                 label: 'Reconnect',
                 accelerator: 'CmdOrCtrl+R',
@@ -23,10 +25,10 @@ menuService.createMenu = () => {
             {
                 label: 'Minimize on close',
                 type: 'checkbox',
+                id: 'minimize-on-close',
                 checked: settingsService.get('minimizeOnClose'),
                 click: () => {
-                    this.checked = !this.checked;
-                    settingsService.set('minimizeOnClose', this.checked);
+                    settingsService.set('minimizeOnClose', converse.getMenuItemById('minimize-on-close').checked);
                 }
             },
             {
@@ -40,12 +42,11 @@ menuService.createMenu = () => {
                     app.quit()
                 },
             },
-        ],
-    }
-
-    const edit = {
-        label: 'Edit',
-        submenu: [
+        ])
+    }));
+    application.append(new MenuItem({
+        label: 'Edit'
+        , submenu: Menu.buildFromTemplate([
             {
                 label: 'Undo',
                 accelerator: 'CmdOrCtrl+Z',
@@ -77,12 +78,11 @@ menuService.createMenu = () => {
                 accelerator: 'CmdOrCtrl+A',
                 role: 'selectAll',
             },
-        ],
-    }
-
-    const help = {
-        label: 'Help',
-        submenu: [
+        ])
+    }));
+    application.append(new MenuItem({
+        label: 'Help'
+        , submenu: Menu.buildFromTemplate([
             {
                 label: 'Debug info',
                 accelerator: 'F12',
@@ -91,12 +91,10 @@ menuService.createMenu = () => {
                     activeWindow.webContents.openDevTools()
                 }
             }
-        ]
-    }
+        ])
+    }));
 
-    const template = [application, edit, help]
-
-    Menu.setApplicationMenu(Menu.buildFromTemplate(template))
+    Menu.setApplicationMenu(application);
 }
 
 module.exports = menuService
diff --git a/modules/settings-service.js b/modules/settings-service.js
index fd503b8..b2ed7f9 100644
--- a/modules/settings-service.js
+++ b/modules/settings-service.js
@@ -1,5 +1,5 @@
 /**
- * Module for getting settigns in Main process.
+ * Module for getting settings in Main process.
  */
 
 const electronSettings = require('electron-settings')
@@ -18,4 +18,8 @@ settingsService.set = (itemKey, settingValue) => {
     electronSettings.setSync(itemKey, settingValue)
 }
 
+settingsService.has = (itemKey) => electronSettings.hasSync(itemKey);
+
+settingsService.unset = (itemKey) => electronSettings.unsetSync(itemKey);
+
 module.exports = settingsService
diff --git a/modules/tray-service.js b/modules/tray-service.js
index e6facae..7b8f39f 100644
--- a/modules/tray-service.js
+++ b/modules/tray-service.js
@@ -14,13 +14,13 @@ const trayService = {}
 const getTrayServiceIcon = (iconName = 'icon') => {
     let iconImage = ''
     if (process.platform === 'darwin') {
-        iconImage = iconName+'Template'
+        iconImage = iconName
     } else if (process.platform === 'win32') {
         iconImage = iconName+'-16x16'
     } else {
         iconImage = iconName+'-48x48'
     }
-    return path.join(__dirname, '/../resources/images/' + iconImage + '.png')
+    return path.join(__dirname, '..','resources','images', iconImage + '.png')
 }
 
 trayService.initTray = (window) => {
diff --git a/package.json b/package.json
index edfeb56..df26507 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
   ],
   "license": "MPL-2.0",
   "devDependencies": {
-    "electron": "11.2.3",
+    "electron": "^16.0.0",
     "electron-builder": "^22.9.1",
     "electron-packager": "^15.2.0",
     "electron-rebuild": "^3.2.5",
@@ -67,7 +67,7 @@
     },
     "win": {
       "target": "nsis",
-      "icon": "resources/images/logo.ico"
+      "icon": "resources/images/logo.png"
     }
   }
 }
diff --git a/preload.js b/preload.js
new file mode 100644
index 0000000..db32f9c
--- /dev/null
+++ b/preload.js
@@ -0,0 +1,42 @@
+const {ipcRenderer, contextBridge} = require('electron');
+const keytar = require('keytar');
+
+contextBridge.exposeInMainWorld('api', {
+    reload() {
+        ipcRenderer.send('reload')
+    },
+
+    settings: {
+        has(setting) {
+            return ipcRenderer.invoke('settings', 'has', setting);
+        },
+        set(setting, value) {
+            ipcRenderer.invoke('settings', 'set', setting, value);
+        },
+        unset(setting) {
+            ipcRenderer.invoke('settings', 'unset', setting);
+        },
+        get(setting) {
+            return ipcRenderer.invoke('settings', 'get', setting);
+        }
+    },
+    trayService: {
+        showEnvelope() {
+            ipcRenderer.invoke('trayService', 'showEnvelope');
+        },
+        hideEnvelope() {
+            ipcRenderer.invoke('trayService', 'hideEnvelope');
+        }
+    },
+    keytar: {
+        getPassword(service, login) {
+            return keytar.getPassword(service, login);
+        },
+        setPassword(service, login, password) {
+            return keytar.setPassword(service, login, password);
+        },
+        deletePassword(service, login) {
+            return keytar.deletePassword(service, login);
+        }
+    }
+});
diff --git a/resources/images/envelope-16x16.png b/resources/images/envelope-16x16.png
new file mode 100644
index 0000000..19a8969
Binary files /dev/null and b/resources/images/envelope-16x16.png differ
diff --git a/resources/images/envelope-48x48.png b/resources/images/envelope-48x48.png
new file mode 100644
index 0000000..90a558d
Binary files /dev/null and b/resources/images/envelope-48x48.png differ
diff --git a/resources/images/envelope.png b/resources/images/envelope.png
new file mode 100644
index 0000000..2dbffb4
Binary files /dev/null and b/resources/images/envelope.png differ
diff --git a/resources/images/logo.png b/resources/images/logo.png
index f85f008..e88a110 100644
Binary files a/resources/images/logo.png and b/resources/images/logo.png differ
diff --git a/setup.js b/setup.js
index a677813..7337cde 100644
--- a/setup.js
+++ b/setup.js
@@ -1,5 +1,6 @@
-require('./app/converse-plugins/desktop-credentials.js');
-const{ getCredentials } = require('./app/credentials.js')
+await import('./app/converse-plugins/desktop-credentials.js')
+await import('./app/converse-plugins/desktop-trayicon.js')
+const getCredentials = (await import('./app/credentials.js')).getCredentials;
 
 
 async function initialize () {
@@ -39,7 +40,7 @@ async function initialize () {
         theme: 'concord',
         view_mode: 'fullscreen',
         websocket_url,
-        whitelisted_plugins: ['converse-debug', 'converse-desktop-credentials'],
+        whitelisted_plugins: ['converse-debug', 'converse-desktop-credentials', 'converse-desktop-trayicon'],
     });
 }