envelope"></i> <span class="nav-label">Mailbox </span><span class="label label-warning pull-right">16/24</span></a>
                    <ul class="nav nav-second-level collapse">
                        <li><a href="mailbox.html">Inbox</a></li>
                        <li><a href="mail_detail.html">Email view</a></li>
                        <li><a href="mail_compose.html">Compose email</a></li>
                        <li><a href="email_template.html">Email templates</a></li>
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