diff --git a/common/framework/drivers/sms/base.php b/common/framework/drivers/sms/base.php
new file mode 100644
index 000000000..253f87b2b
--- /dev/null
+++ b/common/framework/drivers/sms/base.php
@@ -0,0 +1,88 @@
+<?php
+
+namespace Rhymix\Framework\Drivers\SMS;
+
+/**
+ * The base class for other SMS drivers.
+ */
+abstract class Base implements \Rhymix\Framework\Drivers\SMSInterface
+{
+	/**
+	 * The configuration is stored here.
+	 */
+	protected $_config = null;
+	
+	/**
+	 * Direct invocation of the constructor is not permitted.
+	 */
+	protected function __construct(array $config)
+	{
+		$this->_config = $config;
+	}
+	
+	/**
+	 * Create a new instance of the current mail driver, using the given settings.
+	 * 
+	 * @param array $config
+	 * @return void
+	 */
+	public static function getInstance(array $config)
+	{
+		return new static($config);
+	}
+	
+	/**
+	 * Get the human-readable name of this mail driver.
+	 * 
+	 * @return string
+	 */
+	public static function getName()
+	{
+		return class_basename(get_called_class());
+	}
+	
+	/**
+	 * Get the list of configuration fields required by this mail driver.
+	 * 
+	 * @return array
+	 */
+	public static function getRequiredConfig()
+	{
+		return array();
+	}
+	
+	/**
+	 * Get the list of API types supported by this mail driver.
+	 * 
+	 * @return array
+	 */
+	public static function getAPITypes()
+	{
+		return array();
+	}
+	
+	/**
+	 * Check if the current mail driver is supported on this server.
+	 * 
+	 * This method returns true on success and false on failure.
+	 * 
+	 * @return bool
+	 */
+	public static function isSupported()
+	{
+		return true;
+	}
+	
+	/**
+	 * Send a message.
+	 * 
+	 * This method returns true on success and false on failure.
+	 * 
+	 * @param object $message
+	 * @return bool
+	 */
+	public function send(\Rhymix\Framework\SMS $message)
+	{
+		return false;
+	}
+}
diff --git a/common/framework/drivers/sms/coolsms.php b/common/framework/drivers/sms/coolsms.php
new file mode 100644
index 000000000..3ddcd2426
--- /dev/null
+++ b/common/framework/drivers/sms/coolsms.php
@@ -0,0 +1,121 @@
+<?php
+
+namespace Rhymix\Framework\Drivers\SMS;
+
+/**
+ * The CoolSMS SMS driver.
+ */
+class CoolSMS extends Base implements \Rhymix\Framework\Drivers\SMSInterface
+{
+	/**
+	 * Get the list of configuration fields required by this mail driver.
+	 * 
+	 * @return array
+	 */
+	public static function getRequiredConfig()
+	{
+		return array('api_key', 'api_secret');
+	}
+	
+	/**
+	 * Get the list of API types supported by this mail driver.
+	 * 
+	 * @return array
+	 */
+	public static function getAPITypes()
+	{
+		return array();
+	}
+	
+	/**
+	 * Send a message.
+	 * 
+	 * This method returns true on success and false on failure.
+	 * 
+	 * @param object $message
+	 * @return bool
+	 */
+	public function send(\Rhymix\Framework\SMS $message)
+	{
+		try
+		{
+			$recipients = $message->getRecipientsWithCountry();
+			foreach ($recipients as $recipient)
+			{
+				// Populate the options object.
+				$options = new \stdClass;
+				$options->from = $message->getFrom();
+				$options->to = $recipient->number;
+				$options->text = $message->getContent();
+				$options->charset = 'UTF-8';
+				
+				// Determine the message type based on the length.
+				$options->type = $this->_isShort($options->text) ? 'SMS' : 'LMS';
+				
+				// If the message has a subject, it must be an LMS.
+				if ($subject = $message->getSubject())
+				{
+					$options->subject = $subject;
+					$options->type = 'LMS';
+				}
+				
+				// If the message has an attachment, it must be an MMS.
+				if ($attachments = $message->getAttachments())
+				{
+					$image = reset($attachments);
+					$options->image = $image->local_filename;
+					$options->type = 'MMS';
+				}
+				
+				// If the recipient is not a Korean number, force SMS.
+				if ($recipient->country && $recipient->country != 82)
+				{
+					unset($options->subject);
+					unset($options->image);
+					$options->text = $this->_cutShort($options->text);
+					$options->type = 'SMS';
+				}
+				
+				// Send the message.
+				$sender = new \Nurigo\Api\Message($this->_config['api_key'], $this->_config['api_secret']);
+				$result = $sender->send($options);
+				return (isset($result->success_count) && $result->success_count > 0) ? true : false;
+			}
+		}
+		catch (\Nurigo\Exceptions\CoolsmsException $e)
+		{
+			$message->errors[] = class_basename($e) . ': ' . $e->getMessage();
+			return false;
+		}
+	}
+	
+	/**
+	 * Check if a message is short enough to fit in an SMS.
+	 * 
+	 * @param string $message
+	 * @param int $maxlength (optional)
+	 * @return bool
+	 */
+	protected function _isShort($message, $maxlength = 90)
+	{
+		$message = @iconv('UTF-8', 'CP949//IGNORE', $message);
+		return strlen($message) <= $maxlength;
+	}
+	
+	/**
+	 * Cut a message to fit in an SMS.
+	 * 
+	 * @param string $message
+	 * @param int $maxlength (optional)
+	 * @return string
+	 */
+	protected function _cutShort($message, $maxlength = 90)
+	{
+		$message = @iconv('UTF-8', 'CP949//IGNORE', $message);
+		while (strlen($message) > $maxlength)
+		{
+			$message = iconv_substr($message, 0, iconv_strlen($str, 'CP949') - 1, 'CP949');
+		}
+		return iconv('CP949', 'UTF-8', $message);
+	}
+}
diff --git a/common/framework/drivers/smsinterface.php b/common/framework/drivers/smsinterface.php
new file mode 100644
index 000000000..b9b1d0396
--- /dev/null
+++ b/common/framework/drivers/smsinterface.php
@@ -0,0 +1,57 @@
+<?php
+
+namespace Rhymix\Framework\Drivers;
+
+/**
+ * The SMS driver interface.
+ */
+interface SMSInterface
+{
+	/**
+	 * Create a new instance of the current SMS driver, using the given settings.
+	 * 
+	 * @param array $config
+	 * @return void
+	 */
+	public static function getInstance(array $config);
+	
+	/**
+	 * Get the human-readable name of this SMS driver.
+	 * 
+	 * @return string
+	 */
+	public static function getName();
+	
+	/**
+	 * Get the list of configuration fields required by this SMS driver.
+	 * 
+	 * @return array
+	 */
+	public static function getRequiredConfig();
+	
+	/**
+	 * Get the list of API types supported by this SMS driver.
+	 * 
+	 * @return array
+	 */
+	public static function getAPITypes();
+	
+	/**
+	 * Check if the current SMS driver is supported on this server.
+	 * 
+	 * This method returns true on success and false on failure.
+	 * 
+	 * @return bool
+	 */
+	public static function isSupported();
+	
+	/**
+	 * Send a message.
+	 * 
+	 * This method returns true on success and false on failure.
+	 * 
+	 * @param object $message
+	 * @return bool
+	 */
+	public function send(\Rhymix\Framework\SMS $message);
+}
diff --git a/common/framework/sms.php b/common/framework/sms.php
new file mode 100644
index 000000000..926ba3366
--- /dev/null
+++ b/common/framework/sms.php
@@ -0,0 +1,372 @@
+<?php
+
+namespace Rhymix\Framework;
+
+/**
+ * The SMS class.
+ */
+class SMS
+{
+	/**
+	 * Instance properties.
+	 */
+	public $driver = null;
+	public $caller = '';
+	protected $from = '';
+	protected $to = array();
+	protected $subject = '';
+	protected $content = '';
+	protected $attachments = array();
+	public $errors = array();
+	protected $sent = false;
+	
+	/**
+	 * Static properties.
+	 */
+	public static $default_driver = null;
+	public static $custom_drivers = array();
+	
+	/**
+	 * Set the default driver.
+	 * 
+	 * @param object $driver
+	 * @return void
+	 */
+	public static function setDefaultDriver(Drivers\SMSInterface $driver)
+	{
+		self::$default_driver = $driver;
+	}
+	
+	/**
+	 * Get the default driver.
+	 * 
+	 * @return object
+	 */
+	public static function getDefaultDriver()
+	{
+		if (!self::$default_driver)
+		{
+			$default_driver = config('sms.type');
+			$default_driver_class = '\\Rhymix\\Framework\\Drivers\SMS\\' . $default_driver;
+			if (class_exists($default_driver_class))
+			{
+				$default_driver_config = config('sms.' . $default_driver) ?: array();
+				self::$default_driver = $default_driver_class::getInstance($default_driver_config);
+			}
+		}
+		return self::$default_driver;
+	}
+	
+	/**
+	 * Add a custom mail driver.
+	 */
+	public static function addDriver(Drivers\SMSInterface $driver)
+	{
+		self::$custom_drivers[] = $driver;
+	}
+	
+	/**
+	 * Get the list of supported mail drivers.
+	 * 
+	 * @return array
+	 */
+	public static function getSupportedDrivers()
+	{
+		$result = array();
+		foreach (Storage::readDirectory(__DIR__ . '/drivers/sms', false) as $filename)
+		{
+			$driver_name = substr($filename, 0, -4);
+			$class_name = '\Rhymix\Framework\Drivers\SMS\\' . $driver_name;
+			if ($class_name::isSupported())
+			{
+				$result[$driver_name] = array(
+					'name' => $class_name::getName(),
+					'required' => $class_name::getRequiredConfig(),
+					'api_types' => $class_name::getAPITypes(),
+				);
+			}
+		}
+		foreach (self::$custom_drivers as $driver)
+		{
+			if ($driver->isSupported())
+			{
+				$result[strtolower(class_basename($driver))] = array(
+					'name' => $driver->getName(),
+					'required' => $driver->getRequiredConfig(),
+					'api_types' => $driver->getAPITypes(),
+				);
+			}
+		}
+		ksort($result);
+		return $result;
+	}
+	
+	/**
+	 * The constructor.
+	 */
+	public function __construct()
+	{
+		$this->driver = self::getDefaultDriver();
+	}
+	
+	/**
+	 * Set the sender's phone number.
+	 *
+	 * @param string $number Phone number
+	 * @return bool
+	 */
+	public function setFrom($number)
+	{
+		$this->from = preg_replace('/[^0-9]/', '', $number);
+		return true;
+	}
+	
+	/**
+	 * Get the sender's phone number.
+	 *
+	 * @return string|null
+	 */
+	public function getFrom()
+	{
+		return $this->from;
+	}
+	
+	/**
+	 * Add a recipient.
+	 *
+	 * @param string $number Phone number
+	 * @param string $country Country code (optional)
+	 * @return bool
+	 */
+	public function addTo($number, $country = null)
+	{
+		$this->to[] = (object)array(
+			'number' => preg_replace('/[^0-9]/', '', $number),
+			'country' => $country,
+		);
+		return true;
+	}
+	
+	/**
+	 * Get the list of recipients without country codes.
+	 *
+	 * @return array
+	 */
+	public function getRecipients()
+	{
+		return array_map(function($recipient) {
+			return $recipient->number;
+		}, $this->to);
+	}
+	
+	/**
+	 * Get the list of recipients with country codes.
+	 *
+	 * @return array
+	 */
+	public function getRecipientsWithCountry()
+	{
+		return $this->to;
+	}
+	
+	/**
+	 * Set the subject.
+	 *
+	 * @param string $subject
+	 * @return bool
+	 */
+	public function setSubject($subject)
+	{
+		$this->subject = utf8_trim(utf8_clean($subject));
+		return true;
+	}
+	
+	/**
+	 * Get the subject.
+	 *
+	 * @return string
+	 */
+	public function getSubject()
+	{
+		return $this->subject;
+	}
+	
+	/**
+	 * Set the subject (alias to setSubject).
+	 *
+	 * @param string $subject
+	 * @return bool
+	 */
+	public function setTitle($subject)
+	{
+		return $this->setSubject($subject);
+	}
+	
+	/**
+	 * Get the subject (alias to getSubject).
+	 *
+	 * @return string
+	 */
+	public function getTitle()
+	{
+		return $this->getSubject();
+	}
+	
+	/**
+	 * Set the content.
+	 *
+	 * @param string $content
+	 * @return bool
+	 */
+	public function setBody($content)
+	{
+		$this->content = utf8_trim(utf8_clean($content));
+		return true;
+	}
+	
+	/**
+	 * Get the content.
+	 * 
+	 * @return string
+	 */
+	public function getBody()
+	{
+		return $this->content;
+	}
+	
+	/**
+	 * Set the content (alias to setBody).
+	 *
+	 * @param string $content
+	 * @return void
+	 */
+	public function setContent($content)
+	{
+		return $this->setBody($content);
+	}
+	
+	/**
+	 * Get the content (alias to getBody).
+	 * 
+	 * @return string
+	 */
+	public function getContent()
+	{
+		return $this->getBody();
+	}
+	
+	/**
+	 * Attach a file.
+	 *
+	 * @param string $local_filename
+	 * @param string $display_filename (optional)
+	 * @return bool
+	 */
+	public function attach($local_filename, $display_filename = null)
+	{
+		if ($display_filename === null)
+		{
+			$display_filename = basename($local_filename);
+		}
+		if (!Storage::exists($local_filename))
+		{
+			return false;
+		}
+		
+		$this->attachments[] = (object)array(
+			'type' => 'mms',
+			'local_filename' => $local_filename,
+			'display_filename' => $display_filename,
+			'cid' => null,
+		);
+		return true;
+	}
+	
+	/**
+	 * Get the list of attachments to this message.
+	 * 
+	 * @return array
+	 */
+	public function getAttachments()
+	{
+		return $this->attachments;
+	}
+	
+	/**
+	 * Send the email.
+	 * 
+	 * @return bool
+	 */
+	public function send()
+	{
+		// Get caller information.
+		$backtrace = debug_backtrace(0);
+		if(count($backtrace) && isset($backtrace[0]['file']))
+		{
+			$this->caller = $backtrace[0]['file'] . ($backtrace[0]['line'] ? (' line ' . $backtrace[0]['line']) : '');
+		}
+		
+		$output = \ModuleHandler::triggerCall('sms.send', 'before', $this);
+		if(!$output->toBool())
+		{
+			$this->errors[] = $output->getMessage();
+			return false;
+		}
+		
+		try
+		{
+			if ($this->driver)
+			{
+				$this->sent = $this->driver->send($this) ? true : false;
+			}
+			else
+			{
+				$this->errors[] = 'No SMS driver selected';
+				$this->sent = false;
+			}
+		}
+		catch(\Exception $e)
+		{
+			$this->errors[] = $e->getMessage();
+			$this->sent = false;
+		}
+		
+		$output = \ModuleHandler::triggerCall('sms.send', 'after', $this);
+		if(!$output->toBool())
+		{
+			$this->errors[] = $output->getMessage();
+		}
+		
+		return $this->sent;
+	}
+	
+	/**
+	 * Check if the message was sent.
+	 * 
+	 * @return bool
+	 */
+	public function isSent()
+	{
+		return $this->sent;
+	}
+	
+	/**
+	 * Get caller information.
+	 * 
+	 * @return string
+	 */
+	public function getCaller()
+	{
+		return $this->caller;
+	}
+	
+	/**
+	 * Get errors.
+	 * 
+	 * @return array
+	 */
+	public function getErrors()
+	{
+		return $this->errors;
+	}
+}