social/mail_sendgrid/views/sendgrid_template_view.xml

<?xml version="1.0" encoding="utf-8"?>
<odoo>
    <!-- Tree view -->
    <record id="view_sendgrid_template_tree" model="ir.ui.view">
        <field name="name">sendgrid.template.tree</field>
        <field name="model">sendgrid.template</field>
        <field name="arch" type="xml">
            <tree string="Templates">
                <field name="remote_id"/>
                <field name="name"/>
            </tree>
        </field>
    </record>

    <!-- Form view -->
    <record id="view_sendgrid_template_form" model="ir.ui.view">
        <field name="name">sendgrid.template.form</field>
        <field name="model">sendgrid.template</field>
        <field name="arch" type="xml">
            <form string="Template">
                <sheet>
                    <group>
                        <field name="name"/>
                        <field name="remote_id"/>
                        <field name="detected_keywords"/>
                    </group>
                    <notebook>
                        <page string="Html">
                            <field name="html_content"/>
                        </page>
                        <page string="Plain text">
                            <field name="plain_content"/>
                        </page>
                    </notebook>
                </sheet>
            </form>
        </field>
    </record>

    <!-- Action opening the tree view -->
    <record id="open_view_sendgrid_template_tree" model="ir.actions.act_window">
        <field name="name">Template</field>
        <field name="res_model">sendgrid.template</field>
        <field name="view_type">form</field>
        <field name="view_mode">form,tree</field>
        <field name="view_id" ref="view_sendgrid_template_tree"/>
    </record>

    <record model="ir.actions.server" id="update_sendgrid_templates">
        <field name="name">Update Sendgrid Templates</field>
        <field name="model_id" ref="mail_sendgrid.model_sendgrid_template"/>
        <field name="code">
env['sendgrid.template'].update_templates()
action = {
    'name': 'Sendgrid templates',
    'type': 'ir.actions.act_window',
    'res_model': 'sendgrid.template',
    'view_mode': 'tree,form'
}
        </field>
    </record>

    <!-- Add menu entry in Settings/Email -->
    <menuitem name="SendGrid Templates" id="menu_sendgrid_template"
              parent="base.menu_email"
              sequence="8"
              action="open_view_sendgrid_template_tree"/>
    <menuitem name="Update SendGrid" id="menu_update_sendgrid_template"
              parent="base.menu_email"
              sequence="9"
              action="update_sendgrid_templates"/>
</odoo>