server-tools/autovacuum_mail_message/views/message_rule_vacuum.xml

<?xml version="1.0" encoding="utf-8"?>

<odoo>

     <record  model="ir.ui.view" id="message_vacuum_rule_form_view">
        <field name="name">message.vacuum.rule.form.view</field>
        <field name="model">message.vacuum.rule</field>
        <field name="arch" type="xml">
            <form string="Message Vacuum Rule">
                <sheet>
                    <group>
                        <group col="4">
                            <field name="name" colspan="2"/>
                            <field name="company_id" colspan="2"/>
                            <field name="message_type" colspan="2"/>
                            <field name="empty_subtype" colspan="2"/>
                            <field name="retention_time" colspan="2"/>
                        </group>
                        <separator string="Message Models" colspan="4"/>
                        <field name="model_ids" nolabel="1" colspan="4"/>
                        <separator string="Message Subtypes" colspan="4"/>
                        <field name="message_subtype_ids" nolabel="1" colspan="4"/>
                    </group>
                </sheet>
            </form>
        </field>
     </record>

        <record model="ir.ui.view" id="message_vacuum_rule_tree_view">
        <field name="name">message.vacuum.rule.form.view</field>
        <field name="model">message.vacuum.rule</field>
            <field name="arch" type="xml">
                <tree>
                    <field name="name"/>
                    <field name="company_id"/>
                    <field name="message_type"/>
                    <field name="empty_subtype"/>
                    <field name="retention_time"/>
                </tree>
            </field>
        </record>

        <record model="ir.actions.act_window" id="action_message_vacuum_rule">
            <field name="name">Message Vacuum Rule</field>
            <field name="res_model">message.vacuum.rule</field>
            <field name="view_type">form</field>
            <field name="view_mode">tree,form</field>
        </record>

        <menuitem id="menu_action_message_vacuum_rule" parent="base.menu_email" action="action_message_vacuum_rule"/>

</odoo>