Cant see html format in my watcher's mail

[Alexandros888]

Hello,

I have created an advanced watcher alert that works and has the following email section:

"actions": {
    "send_email": {
      "email": {
        "profile": "standard",
        "to": [
          "alexandros.ananikidis@sag-ag.ch"
        ],
        "subject": "[CH PROD] Connect CH Customer Simulation Failed",
  "body": {
    "html": """<h1><font color="red">Elastic results are the following</font></h1>
    
<table border='1' style='font-family:sans-serif;font-size:13px'>
<table>
  <tr>
    <th>host</th>
    <th>level</th>
  </tr>
{{#ctx.payload.hits.hits}}
<tr>
    <td>{{_source.host}}</td>
    <td>{{_source.level}}</td>
</tr>
{{/ctx.payload.hits.hits}}
</table>"""
  }
      }
    }
  }

Nevertheless when i get the email notification of my alert i dont see my results in a table format with borders as i wanted and also the color in the text "Elastic results are the following"
is not red

Also in elasticsearch yml file i have specified the option:

xpack.notification.email.html.sanitization:
    allow: _tables, _blocks, _formatting, _links, _styles

What shall i change in my alert body to make that work with table borders and colors?