<table style="border: 1px solid #ddd;" cellspacing="0" cellpadding="0"> <tr> <td style="padding: 10px 10px; background-color: #eee; border: 1px solid #ddd;"> <a href="<%= Discourse.base_url %>"> <img src="<%= logo_url %>" style="max-height: 35px; min-height: 35px; height: 35px;"></a> </td> </tr> <tr> <td style="background-color: #fff; padding: 10px 10px; font-family: Arial, Helvetica, sans-serif; font-size: 14px;"> <%= raw(html_body) %> </td> </tr> </table>