server-tools/fetchmail_bydate/views/fetchmail_view.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright 2015 Innoviu srl <http://www.innoviu.it>
     Copyright 2015 Agile Business Group <http://www.agilebg.com>
     Copyright 2017 Eficent Business and IT Consulting Services, S.L.
                    <http://www.eficent.com>
     License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl). -->

<odoo>

    <record model="ir.ui.view" id="view_fethmail_bydate_form">
        <field name="name">fetchmail.bydate.form</field>
        <field name="model">fetchmail.server</field>
        <field name="priority" eval="1"/>
        <field name="inherit_id" ref="fetchmail.view_email_server_form"/>
        <field name="arch" type="xml">
            <field name="date" position="after" >
                <field name="last_internal_date"
                       attrs="{'invisible':[('type','!=','imap')]}"/>
            </field>
        </field>
    </record>

</odoo>