diff --git a/common/framework/drivers/mail/dummy.php b/common/framework/drivers/mail/dummy.php
new file mode 100644
index 000000000..2a4dc49e7
--- /dev/null
+++ b/common/framework/drivers/mail/dummy.php
@@ -0,0 +1,34 @@
+<?php
+
+namespace Rhymix\Framework\Drivers\Mail;
+
+/**
+ * The dummy mail driver.
+ */
+class Dummy extends Base implements \Rhymix\Framework\Drivers\MailInterface
+{
+	/**
+	 * 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\Mail $message)
+	{
+		return true;
+	}
+}
diff --git a/common/framework/drivers/mail/mailgun.php b/common/framework/drivers/mail/mailgun.php
new file mode 100644
index 000000000..0cc0f6bb7
--- /dev/null
+++ b/common/framework/drivers/mail/mailgun.php
@@ -0,0 +1,117 @@
+<?php
+
+namespace Rhymix\Framework\Drivers\Mail;
+
+/**
+ * The Mailgun mail driver.
+ */
+class Mailgun extends Base implements \Rhymix\Framework\Drivers\MailInterface
+{
+	/**
+	 * The API URL.
+	 */
+	protected static $_url = 'https://api.mailgun.net/v3';
+	
+	/**
+	 * Get the list of configuration fields required by this mail driver.
+	 * 
+	 * @return array
+	 */
+	public static function getRequiredConfig()
+	{
+		return array('api_domain', 'api_token');
+	}
+	
+	/**
+	 * 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\Mail $message)
+	{
+		// Assemble the list of recipients.
+		$recipients = array();
+		if ($to = $message->message->getTo())
+		{
+			foreach($to as $address => $name)
+			{
+				$recipients[] = $address;
+			}
+		}
+		if ($cc = $message->message->getCc())
+		{
+			foreach($cc as $address => $name)
+			{
+				$recipients[] = $address;
+			}
+		}
+		if ($bcc = $message->message->getBcc())
+		{
+			foreach($bcc as $address => $name)
+			{
+				$recipients[] = $address;
+			}
+		}
+		
+		// Prepare data and options for Requests.
+		$boundary = str_repeat('-', 24) . substr(md5(mt_rand()), 0, 16);
+		$headers = array(
+			'Content-Type' => 'multipart/form-data; boundary=' . $boundary,
+		);
+		$data = implode("\r\n", array(
+			'--' . $boundary,
+			'Content-Disposition: form-data; name="to"',
+			'',
+			implode(', ', $recipients),
+			'--' . $boundary,
+			'Content-Disposition: attachment; name="message"; filename="message.eml"',
+			'Content-Type: message/rfc822',
+			'Content-Transfer-Encoding: binary',
+			'',
+			$message->message->toString(),
+			'--' . $boundary . '--',
+			'',
+		));
+		$options = array(
+			'auth' => array('api', $this->_config['api_token']),
+			'timeout' => 5,
+			'useragent' => 'PHP',
+		);
+		
+		// Send the API request.
+		$url = self::$_url . '/' . $this->_config['api_domain'] . '/messages.mime';
+		$request = \Requests::post($url, $headers, $data, $options);
+		$result = @json_decode($request->body);
+		
+		// Parse the result.
+		if (!$result)
+		{
+			$message->errors[] = 'Mailgun: Connection error: ' . $request->body;
+			return false;
+		}
+		elseif (!$result->id)
+		{
+			$message->errors[] = 'Mailgun: ' . $result->message;
+			return false;
+		}
+		else
+		{
+			return true;
+		}
+	}
+}
diff --git a/common/framework/drivers/mail/mandrill.php b/common/framework/drivers/mail/mandrill.php
new file mode 100644
index 000000000..e360a3ecd
--- /dev/null
+++ b/common/framework/drivers/mail/mandrill.php
@@ -0,0 +1,32 @@
+<?php
+
+namespace Rhymix\Framework\Drivers\Mail;
+
+/**
+ * The Mandrill mail driver.
+ */
+class Mandrill extends SMTP implements \Rhymix\Framework\Drivers\MailInterface
+{
+	/**
+	 * Direct invocation of the constructor is not permitted.
+	 */
+	protected function __construct(array $config)
+	{
+		$config['smtp_host'] = 'smtp.mandrillapp.com';
+		$config['smtp_port'] = 465;
+		$config['smtp_security'] = 'ssl';
+		$config['smtp_user'] = $config['api_user'];
+		$config['smtp_pass'] = $config['api_token'];
+		parent::__construct($config);
+	}
+	
+	/**
+	 * Get the list of configuration fields required by this mail driver.
+	 * 
+	 * @return array
+	 */
+	public static function getRequiredConfig()
+	{
+		return array('api_user', 'api_token');
+	}
+}
diff --git a/common/framework/drivers/mail/postmark.php b/common/framework/drivers/mail/postmark.php
new file mode 100644
index 000000000..4dc0d5a5c
--- /dev/null
+++ b/common/framework/drivers/mail/postmark.php
@@ -0,0 +1,32 @@
+<?php
+
+namespace Rhymix\Framework\Drivers\Mail;
+
+/**
+ * The Postmark mail driver.
+ */
+class Postmark extends SMTP implements \Rhymix\Framework\Drivers\MailInterface
+{
+	/**
+	 * Direct invocation of the constructor is not permitted.
+	 */
+	protected function __construct(array $config)
+	{
+		$config['smtp_host'] = 'smtp.postmarkapp.com';
+		$config['smtp_port'] = 587;
+		$config['smtp_security'] = 'tls';
+		$config['smtp_user'] = $config['api_token'];
+		$config['smtp_pass'] = $config['api_token'];
+		parent::__construct($config);
+	}
+	
+	/**
+	 * Get the list of configuration fields required by this mail driver.
+	 * 
+	 * @return array
+	 */
+	public static function getRequiredConfig()
+	{
+		return array('api_token');
+	}
+}
diff --git a/common/framework/drivers/mail/sendgrid.php b/common/framework/drivers/mail/sendgrid.php
new file mode 100644
index 000000000..ba1c6f1a8
--- /dev/null
+++ b/common/framework/drivers/mail/sendgrid.php
@@ -0,0 +1,32 @@
+<?php
+
+namespace Rhymix\Framework\Drivers\Mail;
+
+/**
+ * The SendGrid mail driver.
+ */
+class SendGrid extends SMTP implements \Rhymix\Framework\Drivers\MailInterface
+{
+	/**
+	 * Direct invocation of the constructor is not permitted.
+	 */
+	protected function __construct(array $config)
+	{
+		$config['smtp_host'] = 'smtp.sendgrid.net';
+		$config['smtp_port'] = 465;
+		$config['smtp_security'] = 'ssl';
+		$config['smtp_user'] = $config['api_user'];
+		$config['smtp_pass'] = $config['api_pass'];
+		parent::__construct($config);
+	}
+	
+	/**
+	 * Get the list of configuration fields required by this mail driver.
+	 * 
+	 * @return array
+	 */
+	public static function getRequiredConfig()
+	{
+		return array('api_user', 'api_pass');
+	}
+}
diff --git a/common/framework/drivers/mail/smtp.php b/common/framework/drivers/mail/smtp.php
index 5e17a6c78..49de5ab35 100644
--- a/common/framework/drivers/mail/smtp.php
+++ b/common/framework/drivers/mail/smtp.php
@@ -67,7 +67,7 @@ class SMTP extends Base implements \Rhymix\Framework\Drivers\MailInterface
 		
 		foreach ($errors as $error)
 		{
-			$message->errors[] = $error;
+			$message->errors[] = 'Failed to send to ' . $error;
 		}
 		return (bool)$result;
 	}