odoo16/addons/website_event_track/data/mail_template_data.xml

<?xml version="1.0" encoding="utf-8"?>
<odoo><data noupdate="1">
    <record id="mail_template_data_track_confirmation" model="mail.template">
        <field name="name">Event: Track Confirmation</field>
        <field name="model_id" ref="website_event_track.model_event_track"/>
        <field name="subject">Confirmation of {{ object.name }}</field>
        <field name="use_default_to" eval="True"/>
        <field name="description">Sent to speakers whose track proposal is accepted (set the template on the right stage)</field>
        <field name="body_html" type="html">
<div>
    Dear <t t-out="object.partner_id.name or object.partner_name or ''">Brandon Freeman</t><br/>
    We are pleased to inform you that your proposal <t t-out="object.name or ''">What This Event Is All About</t> has been accepted and confirmed for the event <t t-out="object.event_id.name or ''">OpenWood Collection Online Reveal</t>.
    <br/>
    You will find more details here:
    <div style="margin: 16px 0px 16px 0px;">
        <a t-attf-href="/event/{{ object.event_id.id }}/track/{{ object.id }}"
                style="padding: 8px 16px 8px 16px; font-size: 14px; color: #FFFFFF; text-decoration: none !important; background-color: #875A7B; border: 0px solid #875A7B; border-radius:3px">
            View Talk
        </a>
    </div>
    <br/><br/>
    Thank you,
    <t t-if="user.signature">
        <br />
        <t t-out="user.signature or ''">--<br/>Mitchell Admin</t>
    </t>
</div></field>
        <field name="lang">{{ object.partner_id.lang }}</field>
        <field name="auto_delete" eval="True"/>
    </record>
</data></odoo>