diff --git a/app/README.md b/app/README.md
new file mode 100644
index 0000000..d782c5f
--- /dev/null
+++ b/app/README.md
@@ -0,0 +1,16 @@
+# SysTray-X App
+
+Please be aware that the JSON file needs to be installed in the:  
+
+.mozilla (Firefox) config directory  
+
+and NOT in the .thunderbird (Thunderbird) config dir.
+
+
+
+## Donations
+To support this project, you can make a donation to its current maintainer:  
+
+[![paypal](https://github.com/Ximi1970/Donate/blob/master/paypal_btn_donateCC_LG_2.gif)](https://paypal.me/Ximi1970)
+[![bitcoin-qrcode-black](https://github.com/Ximi1970/Donate/blob/master/bitcoin-donate-qrcode-black.png)](https://raw.githubusercontent.com/Ximi1970/Donate/master/bitcoin-address.txt)
+ 
diff --git a/app/install-linux.sh b/app/install-linux.sh
new file mode 100755
index 0000000..12041f4
--- /dev/null
+++ b/app/install-linux.sh
@@ -0,0 +1,14 @@
+#!/bin/bash
+
+if [ -z $1 ] ; then
+  echo "Usage: $0 <tb-config-path>"
+  exit 1
+fi
+
+mkdir .mozilla/native-messaging-hosts
+#mkdir .mozilla/managed-storage
+#mkdir .mozilla/pkcs11-modules
+
+cp ping_pong.json .mozilla/native-messaging-hosts/ping_pong.json
+#cp ping_pong.json .mozilla/managed-storage/ping_pong.json
+#cp ping_pong.json .mozilla/pkcs11-modules/ping_pong.json 
diff --git a/app/ping_pong.json b/app/ping_pong.json
new file mode 100644
index 0000000..46b933b
--- /dev/null
+++ b/app/ping_pong.json
@@ -0,0 +1,7 @@
+ {
+  "name": "ping_pong",
+  "description": "Example host for native messaging",
+  "path": "/home/maxime/Diskstation/github/Ximi1970/systray-x/app/ping_pong.py",
+  "type": "stdio",
+  "allowed_extensions": [ "systray-x@Ximi1970" ]
+}
diff --git a/app/ping_pong.py b/app/ping_pong.py
new file mode 100755
index 0000000..d31ee49
--- /dev/null
+++ b/app/ping_pong.py
@@ -0,0 +1,63 @@
+#!/usr/bin/python
+
+import sys
+import json
+import struct
+
+try:
+    # Python 3.x version
+    # Read a message from stdin and decode it.
+    def getMessage():
+        rawLength = sys.stdin.buffer.read(4)
+        if len(rawLength) == 0:
+            sys.exit(0)
+        messageLength = struct.unpack('@I', rawLength)[0]
+        message = sys.stdin.buffer.read(messageLength).decode('utf-8')
+        return json.loads(message)
+
+    # Encode a message for transmission,
+    # given its content.
+    def encodeMessage(messageContent):
+        encodedContent = json.dumps(messageContent).encode('utf-8')
+        encodedLength = struct.pack('@I', len(encodedContent))
+        return {'length': encodedLength, 'content': encodedContent}
+
+    # Send an encoded message to stdout
+    def sendMessage(encodedMessage):
+        sys.stdout.buffer.write(encodedMessage['length'])
+        sys.stdout.buffer.write(encodedMessage['content'])
+        sys.stdout.buffer.flush()
+
+    while True:
+        receivedMessage = getMessage()
+        if receivedMessage == "ping":
+            sendMessage(encodeMessage("pong3"))
+except AttributeError:
+    # Python 2.x version (if sys.stdin.buffer is not defined)
+    # Read a message from stdin and decode it.
+    def getMessage():
+        rawLength = sys.stdin.read(4)
+        if len(rawLength) == 0:
+            sys.exit(0)
+        messageLength = struct.unpack('@I', rawLength)[0]
+        message = sys.stdin.read(messageLength)
+        return json.loads(message)
+
+    # Encode a message for transmission,
+    # given its content.
+    def encodeMessage(messageContent):
+        encodedContent = json.dumps(messageContent)
+        encodedLength = struct.pack('@I', len(encodedContent))
+        return {'length': encodedLength, 'content': encodedContent}
+
+    # Send an encoded message to stdout
+    def sendMessage(encodedMessage):
+        sys.stdout.write(encodedMessage['length'])
+        sys.stdout.write(encodedMessage['content'])
+        sys.stdout.flush()
+
+    while True:
+        receivedMessage = getMessage()
+        if receivedMessage == "ping":
+            sendMessage(encodeMessage("pong2"))
+ 
diff --git a/webext/background.js b/webext/background.js
index 6686f13..b5f376c 100644
--- a/webext/background.js
+++ b/webext/background.js
@@ -99,6 +99,29 @@ console.log("Starting SysTray-X");
 
 SysTrayX.Messaging.init();
 
+
+/*
+ *  Start native messaging
+ */
+var port = browser.runtime.connectNative("ping_pong");
+
+//  Listen for messages from the app.
+port.onMessage.addListener((response) => {
+  console.log("Received: " + response);
+});
+
+//  Every second, send the app a message.
+function ping() {
+  console.log("Sending:  ping");
+  port.postMessage("ping");
+}
+
+window.setInterval(ping, 1000);
+
+
+/*
+ *  Poll the accounts
+ */
 function pollAccounts() {
   console.debug("Polling");
 
diff --git a/webext/manifest.json b/webext/manifest.json
index 2ac6124..cb05c3f 100644
--- a/webext/manifest.json
+++ b/webext/manifest.json
@@ -19,7 +19,7 @@
 
   "default_locale": "en-US",
 
-  "permissions": ["accountsRead", "messagesRead", "storage"],
+  "permissions": ["accountsRead", "messagesRead", "storage", "nativeMessaging"],
 
   "background": {
     "page": "background.html"