social/mail_debrand/data/mail_data.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright 2017 Eficent Business and IT Consulting Services S.L.
     Serpent Consulting Services Pvt. Ltd.
     License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl-3.0) -->
<odoo>
    <!--Default Notification Email template -->
    <record id="mail.mail_template_data_notification_email_default" model="mail.template">
        <field name="body_html"><![CDATA[
<div itemscope itemtype="http://schema.org/EmailMessage">
    <div itemprop="potentialAction" itemscope itemtype="http://schema.org/ViewAction">
        % if ctx.get('button_access'):
        <link itemprop="target" href="${ctx['button_access']['url']}"/>
        <link itemprop="url" href="${ctx['button_access']['url']}"/>
        % endif
        <meta itemprop="name" content="View ${ctx['model_name']}"/>
    </div>
</div>
<div summary="o_mail_notification" style="padding:0px; width:600px; margin:0 auto; background: #FFFFFF repeat top /100%; color:#777777">
    <table cellspacing="0" cellpadding="0" style="width:600px; border-collapse:collapse; background:inherit; color:inherit">
        <tbody><tr>
            <td valign="center" width="270" style="padding:5px 10px 5px 5px;font-size: 30px">
                % if ctx.get('button_access'):
                <a href="${ctx['button_access']['url']}" style="-webkit-user-select: none; padding: 5px 10px; font-size: 12px; line-height: 18px; color: #FFFFFF; border-color:#a24689; text-decoration: none; display: inline-block; margin-bottom: 0px; font-weight: 400; text-align: center; vertical-align: middle; cursor: pointer; white-space: nowrap; background-image: none; background-color: #a24689; border: 1px solid #a24689; border-radius:3px" class="o_default_snippet_text">${ctx['button_access']['title']}</a>
                % endif

                % if ctx.get('button_follow'):
                <a href="${ctx['button_follow']['url']}" style="-webkit-user-select: none; padding: 5px 10px; font-size: 12px; line-height: 18px; color: #FFFFFF; border-color:#a24689; text-decoration: none; display: inline-block; margin-bottom: 0px; font-weight: 400; text-align: center; vertical-align: middle; cursor: pointer; white-space: nowrap; background-image: none; background-color: #a24689; border: 1px solid #a24689; border-radius:3px" class="o_default_snippet_text">${ctx['button_follow']['title']}</a>
                
                % elif ctx.get('button_unfollow'):
                <a href="${ctx['button_unfollow']['url']}" style="-webkit-user-select: none; padding: 5px 10px; font-size: 12px; line-height: 18px; color: #FFFFFF; border-color:#a24689; text-decoration: none; display: inline-block; margin-bottom: 0px; font-weight: 400; text-align: center; vertical-align: middle; cursor: pointer; white-space: nowrap; background-image: none; background-color: #a24689; border: 1px solid #a24689; border-radius:3px" class="o_default_snippet_text">${ctx['button_unfollow']['title']}</a>
                % endif

                % if not ctx.get('button_access') and not ctx.get('button_follow') and not ctx.get('button_unfollow') and ctx.get('model_name'):
                <p style="padding: 5px 10px; font-size: 12px;">
                About <strong>${ctx['model_name']}
                % if ctx.get('record_name'):
                : ${ctx['record_name']}
                % endif
                </strong>
                </p>
                % endif
            </td>
            <td valign="center" align="right" width="270" style="padding:5px 15px 5px 10px; font-size: 12px;">
                <p>
                % if ctx.get('actions'):
                % for action in ctx['actions']:
                <a href="${action['url']}" style="text-decoration:none; color: #a24689;"><strong>${action['title']}</strong></a>
                %if cmp(len(ctx['actions']), 1) == 1 and cmp(len(ctx['actions']), loop.index) == 1:
                    |
                % endif
                % endfor
                % else:
                <strong>Sent by</strong>
                % if ctx.get('website_url'):
                <a href="${ctx['website_url']}" style="text-decoration:none; color: #a24689;">
                % endif
                <strong>${ctx.get('company_name')}</strong>
                % if ctx.get('website_url'):
                </a>
                % endif
                % endif
                </p>
            </td>
        </tr>
    </tbody></table>
</div>
<div style="padding:0px; width:600px; margin:0 auto; background: #FFFFFF repeat top /100%; color:#777777">
    <table cellspacing="0" cellpadding="0" style="vertical-align:top; padding:0px; border-collapse:collapse; background:inherit; color:inherit">
        <tbody><tr>
            <td valign="top" style="width:600px; padding:5px 10px 5px 5px;">
                <div>
                    <hr width="100%" style="background-color:rgb(204,204,204);border:medium none;clear:both;display:block;font-size:0px;min-height:1px;line-height:0;margin:15px auto;padding:0">
                </div>
            </td>
        </tr></tbody>
    </table>
</div>
<div style="padding:0px; width:600px; margin:0 auto; background: #FFFFFF repeat top /100%;color:#777777">
    <table cellspacing="0" cellpadding="0" border="0" style="margin: 0 auto; width:600px; border-collapse:collapse; background:inherit; color:inherit">
        <tbody><tr>
            <td style="padding:5px 10px 5px 5px;font-size: 14px;">
                ${object.body | safe}
                % if ctx.get('tracking'):
                    <ul>
                    % for tracking in ctx['tracking']
                        <li>${tracking[0]} : ${tracking[1]} -&gt; ${tracking[2]}</li>
                    % endfor
                    </ul>
                % endif
            </td>
        </tr></tbody>
    </table>
</div>
% if ctx.get('signature'):
<div style="padding:0px; width:600px;margin:0 auto; background: #FFFFFF repeat top /100%;color:#777777">
    <table cellspacing="0" cellpadding="0" border="0" style="margin: 0 auto; width:600px; border-collapse:collapse; background:inherit; color:inherit">
        <tbody><tr>
            <td style="padding:5px 10px 5px 5px;font-size: 14px; text-align: left;">
                ${ctx['signature'] | safe}
            </td>
        </tr></tbody>
    </table>
</div>
% endif
]]>
        </field>
    </record>

</odoo>