diff --git a/assets/js/src/form/fields/selection.jsx b/assets/js/src/form/fields/selection.jsx
index 4a6560a12b..d91fa7c776 100644
--- a/assets/js/src/form/fields/selection.jsx
+++ b/assets/js/src/form/fields/selection.jsx
@@ -15,12 +15,14 @@ function(
       }
     },
     componentWillMount: function() {
-    this.loadCachedItems();
+      this.loadCachedItems();
     },
     componentDidMount: function() {
-      jQuery('#'+this.props.id).select2({
-        width: '25em'
-      });
+      if(this.props.select2) {
+        jQuery('#'+this.props.id).select2({
+          width: '25em'
+        });
+      }
     },
     loadCachedItems: function() {
       if(typeof(window['mailpoet_'+this.props.endpoint]) !== 'undefined') {
@@ -30,36 +32,6 @@ function(
         });
       }
     },
-    loadItems: function() {
-      this.setState({ loading: true });
-
-      MailPoet.Ajax.post({
-        endpoint: this.props.endpoint,
-        action: 'listing',
-        data: {
-          'offset': 0,
-          'limit': 100,
-          'search': '',
-          'sort_by': 'name',
-          'sort_order': 'asc'
-        }
-      })
-      .done(function(response) {
-        if(this.isMounted()) {
-          if(response === false) {
-            this.setState({
-              loading: false,
-              items: []
-            });
-          } else {
-            this.setState({
-              loading: false,
-              items: response.items
-            });
-          }
-        }
-      }.bind(this));
-    },
     handleChange: function() {
       this.setState({
         selected: jQuery('#'+this.props.id).val()
@@ -82,11 +54,9 @@ function(
       return (
         <select
           ref="selection"
-          id={ this.props.id }
-          value={ this.state.selected }
-          onChange={ this.handleChange }
+          id={ this.props.id || 'mailpoet_field_selection'}
           placeholder={ this.props.placeholder }
-          multiple
+          multiple={ this.props.multiple }
         >
           { options }
         </select>
diff --git a/assets/js/src/jquery.serialize_object.js b/assets/js/src/jquery.serialize_object.js
new file mode 100644
index 0000000000..6db1ba9f23
--- /dev/null
+++ b/assets/js/src/jquery.serialize_object.js
@@ -0,0 +1,107 @@
+define(
+  [
+    'jquery'
+  ],
+  function(
+    $
+  ) {
+    // Combination of jQuery.deparam and jQuery.serializeObject by Ben Alman.
+    /*!
+     * jQuery BBQ: Back Button & Query Library - v1.2.1 - 2/17/2010
+     * http://benalman.com/projects/jquery-bbq-plugin/
+     *
+     * Copyright (c) 2010 "Cowboy" Ben Alman
+     * Dual licensed under the MIT and GPL licenses.
+     * http://benalman.com/about/license/
+     */
+    /*!
+     * jQuery serializeObject - v0.2 - 1/20/2010
+     * http://benalman.com/projects/jquery-misc-plugins/
+     *
+     * Copyright (c) 2010 "Cowboy" Ben Alman
+     * Dual licensed under the MIT and GPL licenses.
+     * http://benalman.com/about/license/
+     */
+    $.fn.serializeObject = function(coerce) {
+      var obj = {},
+        coerce_types = { 'true': !0, 'false': !1, 'null': null };
+
+      // Iterate over all name=value pairs.
+      $.each( this.serializeArray(), function(j,v){
+        var key = v.name,
+          val = v.value,
+          cur = obj,
+          i = 0,
+
+          // If key is more complex than 'foo', like 'a[]' or 'a[b][c]', split it
+          // into its component parts.
+          keys = key.split( '][' ),
+          keys_last = keys.length - 1;
+
+        // If the first keys part contains [ and the last ends with ], then []
+        // are correctly balanced.
+        if ( /\[/.test( keys[0] ) && /\]$/.test( keys[ keys_last ] ) ) {
+          // Remove the trailing ] from the last keys part.
+          keys[ keys_last ] = keys[ keys_last ].replace( /\]$/, '' );
+
+          // Split first keys part into two parts on the [ and add them back onto
+          // the beginning of the keys array.
+          keys = keys.shift().split('[').concat( keys );
+
+          keys_last = keys.length - 1;
+        } else {
+          // Basic 'foo' style key.
+          keys_last = 0;
+        }
+
+        // Coerce values.
+        if ( coerce ) {
+          val = val && !isNaN(val)            ? +val              // number
+            : val === 'undefined'             ? undefined         // undefined
+            : coerce_types[val] !== undefined ? coerce_types[val] // true, false, null
+            : val;                                                // string
+        }
+
+        if ( keys_last ) {
+          // Complex key, build deep object structure based on a few rules:
+          // * The 'cur' pointer starts at the object top-level.
+          // * [] = array push (n is set to array length), [n] = array if n is
+          //   numeric, otherwise object.
+          // * If at the last keys part, set the value.
+          // * For each keys part, if the current level is undefined create an
+          //   object or array based on the type of the next keys part.
+          // * Move the 'cur' pointer to the next level.
+          // * Rinse & repeat.
+          for ( ; i <= keys_last; i++ ) {
+            key = keys[i] === '' ? cur.length : keys[i];
+            cur = cur[key] = i < keys_last
+              ? cur[key] || ( keys[i+1] && isNaN( keys[i+1] ) ? {} : [] )
+              : val;
+          }
+
+        } else {
+          // Simple key, even simpler rules, since only scalars and shallow
+          // arrays are allowed.
+
+          if ( $.isArray( obj[key] ) ) {
+            // val is already an array, so push on the next value.
+            obj[key].push( val );
+
+          } else if ( obj[key] !== undefined ) {
+            // val isn't an array, but since a second value has been specified,
+            // convert val into an array.
+            obj[key] = [ obj[key], val ];
+
+          } else {
+            // val is a scalar.
+            obj[key] = val;
+          }
+        }
+      });
+
+      return obj;
+    };
+
+    return $;
+  }
+);
\ No newline at end of file
diff --git a/assets/js/src/newsletters/send.jsx b/assets/js/src/newsletters/send.jsx
index 15054b6e9b..fb8cb82022 100644
--- a/assets/js/src/newsletters/send.jsx
+++ b/assets/js/src/newsletters/send.jsx
@@ -1,6 +1,7 @@
 define(
   [
     'react',
+    'react-router',
     'mailpoet',
     'form/form.jsx',
     'form/fields/selection.jsx',
@@ -8,6 +9,7 @@ define(
   ],
   function(
     React,
+    Router,
     MailPoet,
     Form,
     Selection,
@@ -32,7 +34,9 @@ define(
           <Selection
             placeholder="Select a list"
             id="mailpoet_segments"
-            endpoint="segments" />
+            endpoint="segments"
+            multiple={ true }
+            select2={ true } />
         )
       },
       {
@@ -77,15 +81,42 @@ define(
 
     var messages = {
       updated: function() {
-        MailPoet.Notice.success('Newsletter succesfully updated!');
+        MailPoet.Notice.success('The newsletter has been updated!');
       }
     };
 
     var NewsletterSend = React.createClass({
+      mixins: [
+        Router.Navigation
+      ],
       handleSend: function() {
-        console.log('send.');
-        console.log(jQuery('#mailpoet_newsletter').serializeArray());
-        console.log(jQuery('#mailpoet_segments').val());
+        MailPoet.Ajax.post({
+          endpoint: 'newsletters',
+          action: 'send',
+          data: {
+            id: this.props.params.id,
+            newsletter: jQuery('#mailpoet_newsletter').serializeObject(),
+            segments: jQuery('#mailpoet_segments').val()
+          }
+        }).done(function(response) {
+          if(response === true) {
+            this.transitionTo('/');
+            MailPoet.Notice.success(
+              'The newsletter has been sent!'
+            );
+          } else {
+            if(response.errors) {
+              MailPoet.Notice.error(
+                response.errors.join("<br />")
+              );
+            } else {
+              MailPoet.Notice.error(
+                'An error occurred while trying to send. '+
+                '<a href="?page=mailpoet-settings">Check your settings.</a>'
+              );
+            }
+          }
+        }.bind(this));
       },
       render: function() {
         return (
diff --git a/assets/js/src/subscribers/list.jsx b/assets/js/src/subscribers/list.jsx
index 3a10cbf993..f63b6dadf7 100644
--- a/assets/js/src/subscribers/list.jsx
+++ b/assets/js/src/subscribers/list.jsx
@@ -65,7 +65,7 @@ define(
         label: 'Move to list...',
         onSelect: function() {
           return (
-            <ItemSelection
+            <Selection
               endpoint="segments"
               id="move_to_segment" />
           );
@@ -81,7 +81,7 @@ define(
         label: 'Add to list...',
         onSelect: function() {
           return (
-            <ItemSelection
+            <Selection
               endpoint="segments"
               id="add_to_segment" />
           );
@@ -97,7 +97,7 @@ define(
         label: 'Remove from list...',
         onSelect: function() {
           return (
-            <ItemSelection
+            <Selection
               endpoint="segments"
               id="remove_from_segment" />
           );
diff --git a/lib/Mailer/Bridge.php b/lib/Mailer/Bridge.php
index bb429e55c7..c86f602f4a 100644
--- a/lib/Mailer/Bridge.php
+++ b/lib/Mailer/Bridge.php
@@ -6,21 +6,43 @@ use MailPoet\Models\Setting;
 if(!defined('ABSPATH')) exit;
 
 class Bridge {
+  protected $from_address = null;
+  protected $from_name = '';
+  protected $reply_to_address = null;
+  protected $reply_to_name = '';
+  protected $newsletter = null;
+  protected $subscribers = null;
+  protected $api_key = null;
+
   function __construct($newsletter, $subscribers) {
     $this->newsletter = $newsletter;
     $this->subscribers = $subscribers;
 
-    $this->from_name =
-      Setting::where('name', 'from_name')
-      ->findOne()->value;
+    $this->from_address = (
+        isset($this->newsletter['from_address'])
+      )
+      ? $this->newsletter['from_address']
+      : Setting::getValue('from_address');
 
-    $this->from_address =
-      Setting::where('name', 'from_address')
-      ->findOne()->value;
+    $this->from_name = (
+        isset($this->newsletter['from_name'])
+      )
+      ? $this->newsletter['from_name']
+      : Setting::getValue('from_name', '');
 
-    $this->api_key =
-      Setting::where('name', 'api_key')
-      ->findOne()->value;
+    $this->reply_to_address = (
+        isset($this->newsletter['reply_to_address'])
+      )
+      ? $this->newsletter['reply_to_address']
+      : Setting::getValue('reply_to_address');
+
+    $this->reply_to_name = (
+        isset($this->newsletter['reply_to_name'])
+      )
+      ? $this->newsletter['reply_to_name']
+      : Setting::getValue('reply_to_name', '');
+
+    $this->api_key = Setting::where('name', 'api_key')->findOne()->value;
   }
 
   function messages() {
@@ -32,19 +54,27 @@ class Bridge {
   }
 
   function generateMessage($subscriber) {
-    return array(
+    $message = array(
       'subject' => $this->newsletter['subject'],
-      'to' => (array(
+      'to' => array(
         'address' => $subscriber['email'],
         'name' => $subscriber['first_name'].' '.$subscriber['last_name']
-      )),
-      'from' => (array(
+      ),
+      'from' => array(
         'address' => $this->from_address,
         'name' => $this->from_name
-      )),
+      ),
       'text' => "",
       'html' => $this->newsletter['body']
     );
+
+    if($this->reply_to_address !== null) {
+      $message['reply_to'] = array(
+        'address' => $this->reply_to_address,
+        'name' => $this->reply_to_name
+      );
+    }
+    return $message;
   }
 
   function auth() {
@@ -74,7 +104,7 @@ class Bridge {
     );
 
     $success =
-      (wp_remote_retrieve_response_code($result)===201);
+      (wp_remote_retrieve_response_code($result) === 201);
 
     return $success;
   }
diff --git a/lib/Models/Setting.php b/lib/Models/Setting.php
index 18e108c40e..d50c75b31c 100644
--- a/lib/Models/Setting.php
+++ b/lib/Models/Setting.php
@@ -9,16 +9,21 @@ class Setting extends Model {
   function __construct() {
     parent::__construct();
 
-    $this->addValidations("name", array(
-      "required"    => "name_is_blank",
-      "isString"    => "name_is_not_string"
-    ));
-    $this->addValidations("value", array(
-      "required"    => "value_is_blank",
-      "isString"    => "value_is_not_string"
+    $this->addValidations('name', array(
+      'required' => 'name_is_blank',
+      'isString' => 'name_is_not_string'
     ));
   }
 
+  public static function getValue($key, $default = null) {
+    $setting = Setting::where('name', $key)->findOne();
+    if($setting === false) {
+      return $default;
+    } else {
+      return $setting->value;
+    }
+  }
+
   public static function createOrUpdate($model) {
     $exists = self::where('name', $model['name'])
       ->find_one();
diff --git a/lib/Router/Newsletters.php b/lib/Router/Newsletters.php
index 63daf3436a..1a3ab07762 100644
--- a/lib/Router/Newsletters.php
+++ b/lib/Router/Newsletters.php
@@ -4,6 +4,7 @@ namespace MailPoet\Router;
 use MailPoet\Listing;
 use MailPoet\Mailer\Bridge;
 use MailPoet\Models\Newsletter;
+use MailPoet\Models\Segment;
 use MailPoet\Models\Subscriber;
 use MailPoet\Models\NewsletterTemplate;
 use MailPoet\Newsletter\Renderer\Renderer;
@@ -25,7 +26,7 @@ class Newsletters {
   }
 
   function getAll() {
-    $collection = Newsletter::find_array();
+    $collection = Newsletter::findArray();
     wp_send_json($collection);
   }
 
@@ -48,11 +49,43 @@ class Newsletters {
     wp_send_json($result);
   }
 
-  function send($id) {
-    $newsletter = Newsletter::find_one($id)
-      ->as_array();
-    $subscribers = Subscriber::find_array();
-    $mailer = new Bridge($newsletter, $subscribers);
+  function send($data = array()) {
+    $newsletter = Newsletter::findOne($data['id'])->asArray();
+
+    if(empty($data['segments'])) {
+      return wp_send_json(array(
+        'errors' => array(
+            __("You need to select a list.")
+          )
+      ));
+    }
+
+    $segments = Segment::whereIdIn($data['segments'])->findMany();
+    $subscribers = array();
+    foreach($segments as $segment) {
+      $segment_subscribers = $segment->subscribers()->findMany();
+      foreach($segment_subscribers as $segment_subscriber) {
+        $subscribers[$segment_subscriber->email] = $segment_subscriber
+          ->asArray();
+      }
+    }
+
+    if(empty($subscribers)) {
+      return wp_send_json(array(
+        'errors' => array(
+            __("No subscribers found.")
+          )
+      ));
+    }
+
+    // TO REMOVE once we add the columns from/reply_to
+    $newsletter = array_merge($newsletter, $data['newsletter']);
+    // END - TO REMOVE
+
+    $renderer = new Renderer(json_decode($newsletter['body'], true));
+    $newsletter['body'] = $renderer->renderAll();
+
+    $mailer = new Bridge($newsletter, array_values($subscribers));
     wp_send_json($mailer->send());
   }
 
diff --git a/webpack.config.js b/webpack.config.js
index 13290009a9..b90589ea77 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -58,7 +58,13 @@ config.push(_.extend({}, baseConfig, {
   name: 'admin',
   entry: {
     vendor: ['handlebars', 'handlebars_helpers'],
-    mailpoet: ['mailpoet', 'ajax', 'modal', 'notice'],
+    mailpoet: [
+      'mailpoet',
+      'ajax',
+      'modal',
+      'notice',
+      'jquery.serialize_object'
+    ],
     admin: [
       'settings.jsx',
       'subscribers/subscribers.jsx',