fetchmail_view.xml

<?xml version="1.0"?>
<openerp>
    <data>
        <record model="ir.ui.view" id="view_email_server_form_inherit">
            <field name="name">email.server.form.inherit</field>
            <field name="model">email.server</field>
            <field name="type">form</field>
            <field ref="fetchmail.view_email_server_form" name="inherit_id" />
            <field name="arch" type="xml">
                <form string="POP/IMAP Server">
                    <button states="done" position="replace" name="button_fetch_mail" type="object" string="Fetch Emails lol"/>
                </form>
            </field>
        </record>
    </data>
</openerp>