diff --git a/setup.cfg b/setup.cfg
index 583e008..88de4c7 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -12,6 +12,7 @@ packages = kassandra
 python_requires = >=3.9.2
 package_dir = =src
 install_requires =
+    Jinja2>=3.0.2
     PyYAML>=5.4.1
 	matrix-bot @ git+https://gitea.auro.re/histausse/matrix-bot.git
 
diff --git a/src/kassandra/format.py b/src/kassandra/format.py
index f298565..bef1adc 100644
--- a/src/kassandra/format.py
+++ b/src/kassandra/format.py
@@ -10,6 +10,25 @@ from typing import (
     NoReturn,
     Optional
 )
+from jinja2 import Environment, BaseLoader
+
+template_raw = (
+    "{% if alert['labels']['severity'] == 'critical' and alert['status'] == 'firing' %}"
+    "@room<b><font color='red'>"
+    "{% elif alert['labels']['severity'] == 'warning' and alert['status'] == 'firing' %}"
+    "<b><font color='orange'>"
+    "{% elif alert['status'] == 'resolved' %}"
+    "<b><font color='green'> End of alert "
+    "{% else %}"
+    "<b><font>"
+    "{% endif %}"
+    "{{ alert['labels']['alertname'] }}: {{ alert['labels']['instance'] }} <br/>"
+    "</font></b>"
+    "{{ alert['annotations']['title'] }}<br/>"
+    "{{ alert['annotations']['description'] }}<br/>"
+)
+template = Environment(loader=BaseLoader).from_string(template_raw)
+
 
 @dataclasses.dataclass
 class Message:
@@ -17,14 +36,20 @@ class Message:
     formated_body: Optional[str]
 
 def format_alert(
-    alert: dict[str, Any]
-)->Message:
+    alert_json: dict[str, Any]
+)->list[Message]:
     """
         Format an alert in json format to a nice string.
     """
-    body = json.dumps(alert, indent=4)
-    formated_body = f"<pre><code>{body}</code></pre>\n"
-    return Message(body, formated_body)
+    messages = []
+    for alert in alert_json['alerts']:
+        formated_body = template.render(alert=alert, status=alert_json['status'])
+        body = f"{ alert['annotations']['title'] }:\n{ alert['annotations']['description'] }"
+        if '@room' in formated_body:
+            body = '@room ' + body
+            formated_body = formated_body.replace('@room', '')
+        messages.append(Message(body, formated_body))
+    return messages
 
 async def format_alerts(
     alert_queue: asyncio.Queue[dict[str,Any]],
@@ -35,7 +60,8 @@ async def format_alerts(
     """
     while True:
         alert = await alert_queue.get()
-        message = format_alert(alert)
-        await message_queue.put(message)
+        messages = format_alert(alert)
+        for message in messages:
+            await message_queue.put(message)
         alert_queue.task_done()