campanhas_email/views/snippets.xml

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

<template id="mailing_list_subscribe" inherit_id="website.snippets" name="Subscribe to Newsletter">

    <xpath expr="//div[@id='snippet_content']" position="inside">
        <div>
            <div class="oe_snippet_thumbnail">
                <img class="oe_snippet_thumbnail_img" src="/mass_mailing/static/src/img/blocks/button_newsletter.png"/>
                <span class="oe_snippet_thumbnail_title">Newsletter</span>
            </div>

            <div class="oe_snippet_body input-group js_subscribe"
                      data-list-id="0">
                <input
                      type="email"
                      name="email"
                      class="js_subscribe_email form-control"
                      placeholder="your email..."/>
                <span class="input-group-btn">
                    <a href="#" class="btn btn-primary js_subscribe_btn">Subscribe</a>
                    <a href="#" class="btn btn-success js_subscribed_btn hidden" disabled="disabled">Thanks</a>
                </span>
                <div class="alert alert-success hidden">Thanks for your subscription!</div>
            </div>

        </div>
    </xpath>

    <xpath expr="//div[@id='snippet_options']" position="inside">
        <div data-snippet-option-id='mailing_list_subscribe'
            data-selector=".js_subscribe"
            data-selector-siblings="p, h1, h2, h3, blockquote, .well, .panel"
           >
            <li>
                <a href="#" class="button js_mailing_list">Change Newsletter</a>
            </li>
        </div>
    </xpath>

</template>

</data>
</openerp>