<?xml version="1.0"?>
<tree string="Mailings" sample="1" class="o_mass_mailing_mailing_tree">
                    <field name="calendar_date" string="Date" widget="datetime"/>
                    <field name="subject" attrs="{'readonly': [('state', 'in', ('sending', 'done'))]}"/>
                    <field name="mailing_model_id" string="Recipients" optional="hide"/>
                    <field name="user_id" widget="many2one_avatar_user"/>
                    <field name="ab_testing_enabled" string="A/B Test" groups="mass_mailing.group_mass_mailing_campaign"/>
                    <field name="campaign_id" string="Campaign" groups="mass_mailing.group_mass_mailing_campaign" optional="hide"/>
                    <field name="sent" sum="Total"/>
                    <field name="received_ratio" class="d-flex align-items-center ps-0 ps-lg-5" widget="progressbar" string="Delivered (%)" avg="Average"/>
                    <field name="opened_ratio" class="d-flex align-items-center ps-0 ps-lg-5" widget="progressbar" string="Opened (%)" avg="Average"/>
                    <field name="bounced_ratio" string="Bounced (%)" optional="hide" avg="Average"/>
                    <field name="clicks_ratio" string="Clicked (%)" avg="Average"/>
                    <field name="replied_ratio" string="Replied (%)" avg="Average"/>
                    <field name="state" decoration-info="state in ['draft', 'in_queue']" decoration-success="state == 'sending' or state == 'done'" widget="badge"/>
                </tree>
            