Hi,
You can follow the steps below
<!-- NEWSLETTER -->
<div class="subscribe-form">
<div class="getResponseForm"><input name="getpostdata" type="hidden" value="get" />
<div class="subscribe-form">
<p>Get our awesome releases and latest updates with exclusive news and offers in your inbox.</p>
<div class="row">
<div class="col-xs-12">
<div class="input-group"><input class="form-control" name="e" type="text" value="" placeholder="Your Email" /> <input name="l" type="hidden" value="f3wtvKC49aSVFEMkeCcnmg" /> <span class="input-group-btn"><input class="btn btn-primary btn-getResponse" name="Subscribe" type="button" value="Subscribe" /></span></div>
</div>
</div>
</div>
<div class="subscribe-result"> </div>
</div>
</div>
<!-- //NEWSLETTER -->
Hope it helps
Regards