server-tools/fetchmail_attach_from_folder/wizard/attach_mail_manually.xml

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

    <record model="ir.ui.view" id="view_attach_mail_manually">
        <field name="name">fetchmail.attach.mail.manually</field>
        <field name="model">fetchmail.attach.mail.manually</field>
        <field name="arch" type="xml">
            <form col="4" string="Attach mail manually">
                <group>
                    <field name="folder_id" />
                    <field name="mail_ids" nolabel="1" colspan="4">
                        <tree editable="top" create="0">
                            <field name="subject" />
                            <field name="date" />
                            <field name="object_id" />
                        </tree>
                    </field>
                </group>
                <footer>
                    <button
                        string="Save"
                        type="object"
                        name="attach_mails"
                        class="oe_highlight" />
                    or
                    <button
                        special="cancel"
                        string="Cancel"
                        class="oe_link" />
                </footer>
            </form>
        </field>
    </record>

</odoo>