odoo16/addons/mass_mailing/data/ir_module_data.xml

<?xml version="1.0" encoding="utf-8"?>
<odoo>
    <data noupdate="0">
        <record model="ir.module.category" id="base.module_category_marketing_email_marketing">
            <field name="sequence">19</field>
            <field name="description">Helps you manage your mass mailing to design
    professional emails and reuse templates.</field>
        </record>
    </data>
</odoo>