<?xml version="1.0"?>
<tree string="Mass Mailing Statistics" sample="1">
                    <field name="name"/>
                    <field name="campaign" groups="mass_mailing.group_mass_mailing_campaign"/>
                    <field name="mailing_type" invisible="1"/>
                    <field name="scheduled_date" string="Scheduled On"/>
                    <field name="state"/>
                    <field name="scheduled"/>
                    <field name="sent"/>
                    <field name="delivered"/>
                    <field name="opened"/>
                    <field name="replied"/>
                    <field name="clicked"/>
                    <field name="canceled" optional="hide"/>
                    <field name="error" optional="hide"/>
                    <field name="bounced" optional="hide"/>
                </tree>
            