Added phpmailer class to the composer dependencies.

composer.json

@@ -15,6 +15,7 @@
         "apigen/apigen": "~4.1"
     },
     "require": {
-        "gregwar/captcha": "^1.1"
+        "gregwar/captcha": "^1.1",
+        "phpmailer/phpmailer": "^5.2"
     }
 }

composer.lock

@@ -4,8 +4,8 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
         "This file is @generated automatically"
     ],
-    "hash": "75e06049c3451b1d883c03b8a4fc1a3c",
+    "hash": "568ac1ab5ba507badb0c686bb146eed9",
-    "content-hash": "500445974aa564048f14ea58a75b9635",
+    "content-hash": "f1caee945fa2c3ffed8c56511645dce9",
     "packages": [
         {
             "name": "gregwar/captcha",
@@ -54,6 +54,66 @@
                 "spam"
             ],
             "time": "2015-09-11 15:23:20"
+        },
+        {
+            "name": "phpmailer/phpmailer",
+            "version": "v5.2.13",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/PHPMailer/PHPMailer.git",
+                "reference": "45df3a88f7f46071e10d0b600f228d19f95911b3"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/PHPMailer/PHPMailer/zipball/45df3a88f7f46071e10d0b600f228d19f95911b3",
+                "reference": "45df3a88f7f46071e10d0b600f228d19f95911b3",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.0.0"
+            },
+            "require-dev": {
+                "phpdocumentor/phpdocumentor": "*",
+                "phpunit/phpunit": "4.7.*"
+            },
+            "suggest": {
+                "league/oauth2-client": "Needed for Gmail's XOAUTH2 authentication system"
+            },
+            "type": "library",
+            "autoload": {
+                "classmap": [
+                    "class.phpmailer.php",
+                    "class.phpmaileroauth.php",
+                    "class.phpmaileroauthgoogle.php",
+                    "class.smtp.php",
+                    "class.pop3.php",
+                    "extras/EasyPeasyICS.php",
+                    "extras/ntlm_sasl_client.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "LGPL-2.1"
+            ],
+            "authors": [
+                {
+                    "name": "Jim Jagielski",
+                    "email": "jimjag@gmail.com"
+                },
+                {
+                    "name": "Marcus Bointon",
+                    "email": "phpmailer@synchromedia.co.uk"
+                },
+                {
+                    "name": "Andy Prevost",
+                    "email": "codeworxtech@users.sourceforge.net"
+                },
+                {
+                    "name": "Brent R. Matzelle"
+                }
+            ],
+            "description": "PHPMailer is a full-featured email creation and transfer class for PHP",
+            "time": "2015-09-14 09:18:12"
         }
     ],
     "packages-dev": [

src/application/libraries/notifications.php

@@ -11,8 +11,6 @@
  * @since       v1.0.0
  * ---------------------------------------------------------------------------- */
 
-require_once dirname(__FILE__) . '/external/class.phpmailer.php';
-
 /**
  * This library handles all the notification email deliveries
  * on the system.