Code

Markup in contact/index.php

<h2>Send us an email</h2>
<div id="status">
<!--pipe:mail--> 
<!--view:default-->
<div class="status_update">
   <!--data--><h3>{status}</h3><!--data-->
</div>
<!--view:default-->
<!--view:error-->
<div class="status_error">
   <h3>Whoops!</h3>
   <p>Sorry, the message wasn't sent.</p>
</div>
<!--view:error-->
<!--view:feedback-->
<div class="status_error">
   <h3>Some contact info was invalid:</h3>
   <ul class="standard_list">
   <!--data-->
      <li>{message}</li>
   <!--data-->
   </ul>
</div>
<!--view:feedback-->
<!--pipe:mail-->
</div>
<form action="/contact/" method="post">
   <ul>
      <li>
         <label for="name">Name</label>
         <input type="text" id="name" name="name" placeholder="First and last name" />
      </li>
      <li>
         <label for="email">Email</label>
         <input type="text" id="email" name="email" placeholder="example@site.com" />
      </li>
      <li>
         <label for="message">Message</label>
         <textarea id="message" name="message" rows="2" cols="60" placeholder="Your message">
         </textarea>
      </li>
      <li>
         <input type="submit" value="Send" />
      </li>
   </ul>
</form>

PHP in nsite/contact/index.php

// register ports.
n\port\register_bulk(
   $ports = array(
      'name' => array(
         'max_length' => 50,
         'filter' => n\constant\FILTER_TEXT
      ),
      'email' => array(
         'max_length' => 250,
         'filter' => n\constant\FILTER_EMAIL
      ),
      'message' => array(
         'max_length' => 600,
         'filter' => n\constant\FILTER_TEXT_MULTILINE
      )
   )
);
// register pure action pipe.
n\pipe\register_pure_action($name = 'mail', $actions = array(
   'send' => array(
      'io_func' => function($port_vals){
         // use Zend's really nice email class
         include('Zend/Mail.php');
         include('Zend/Mail/Transport/Smtp.php');
         $ports = n\port\get(array('name','email','message'));
         $message = "Name: ".$ports['name']."\n"."Email: ".$ports['email']."\n\n".$ports['message'];
         $tr = new Zend_Mail_Transport_Smtp($server = 'smtp.gmail.com', $config = array(
            'auth' => 'login',
            // set in nconfig.php
            'username' => n\config\get('acc'),
            'password' => n\config\get('pw'),
            'port' => 587,
            'ssl' => 'tls'
         ));
         Zend_Mail::setDefaultTransport($tr);
         $mail = new Zend_Mail();
         $mail->setBodyText($message)
            ->setFrom('address@website.com')
            ->addTo('contact@website.com')
            ->setSubject('Contact form submission')
            ->send();
         return true;
      },
      'signature' => array('name','email','message'),
      'message' => 'Thank you for contacting us!'
   )
));

Output for standard view (i.e., form not submitted)

<div id="canvas">
<h2>Send us an email</h2>
<form action="/contact/" method="post">
…

Output for submitted form with invalid name

<div class="status_error">
   <h3>Some contact info was invalid:</h3>
   <ul class="standard_list">
      <li>'Name' is a required field.</li>
   </ul>
</div>
<div id="canvas">
<h2>Send us an email</h2>
<form action="/contact/" method="post">
…

Output for successful submission

<div class="status_update">
   <h3>Thank you for the message</h3>
   <p>We appreciate your feedback.</p>
</div>
<div id="canvas">
<h2>Send us an email</h2>
<form action="/contact/" method="post">
…