mail-addons/mail_all/views/templates.xml

<?xml version="1.0" encoding="utf-8"?>
<openerp>
    <data>
        <record id="action_mail_all_feeds" model="ir.actions.client">
            <field name="name">All messages</field>
            <field name="tag">mail.wall</field>
            <field name="context">{
              'default_model': 'res.users',
              'default_res_id': uid,
              'thread_model': 'res.partner',
              'needaction_menu_ref': ['mail.mail_tomefeeds', 'mail.mail_starfeeds', 'mail.mail_inboxfeeds']
            }</field>
            <field name="params" eval="&quot;{
                'domain': [],
                'view_mailbox': True,
                'show_compose_message': False
            }&quot;"/>
            <field name="help" type="html">
                <p>
                    No message found.
                </p>
            </field>
        </record>

        <record id="mail_all_feeds" model="ir.ui.menu">
          <field name="name">All messages</field>
          <field name="sequence" eval="100"/>
          <field name="action" ref="action_mail_all_feeds"/>
          <field name="parent_id" ref="mail.mail_feeds"/>
        </record>
    </data>
</openerp>