diff --git a/common/framework/drivers/sms/iwinv.php b/common/framework/drivers/sms/iwinv.php
index 88ddfae82..d40481098 100644
--- a/common/framework/drivers/sms/iwinv.php
+++ b/common/framework/drivers/sms/iwinv.php
@@ -8,9 +8,9 @@ namespace Rhymix\Framework\Drivers\SMS;
 class iwinv extends Base implements \Rhymix\Framework\Drivers\SMSInterface
 {
 	/**
-	 * API endpoint URL.
+	 * API endpoint URL (fallback if URL is not explicitly configured)
 	 */
-	const API_URL = 'https://sms.service.iwinv.kr/send/';
+	const LEGACY_API_URL = 'https://sms.service.iwinv.kr/send/';
 	
 	/**
 	 * API specifications.
@@ -40,7 +40,7 @@ class iwinv extends Base implements \Rhymix\Framework\Drivers\SMSInterface
 	/**
 	 * Config keys used by this driver are stored here.
 	 */
-	protected static $_required_config = array('api_key', 'api_secret');
+	protected static $_required_config = array('api_url', 'api_key', 'api_secret');
 	protected static $_optional_config = array();
 
 	/**
@@ -54,6 +54,19 @@ class iwinv extends Base implements \Rhymix\Framework\Drivers\SMSInterface
 	{
 		return true;
 	}
+	
+	/**
+	 * Get the list of API URLs supported by this driver.
+	 * 
+	 * @return array
+	 */
+	public static function getApiUrls()
+	{
+		return array(
+			'https://sms.bizservice.iwinv.kr/api/send/' => 'sms.bizservice.iwinv.kr',
+			'https://sms.service.iwinv.kr/send/' => 'sms.service.iwinv.kr',
+		);
+	}
 
 	/**
 	 * Send a message.
@@ -107,12 +120,22 @@ class iwinv extends Base implements \Rhymix\Framework\Drivers\SMSInterface
 				$data['date'] = gmdate('Y-m-d H:i:s', $message->delay + (3600 * 9));
 			}
 			
+			// Set API URL
+			if (!empty($this->_config['api_url']))
+			{
+				$api_url = $this->_config['api_url'];
+			}
+			else
+			{
+				$api_url = self::LEGACY_API_URL;
+			}
+			
 			// We need to use curl because Filehandler::getRemoteResource() doesn't work with this API for some reason.
 			if (!$curl)
 			{
 				$curl = curl_init();
 			}
-			curl_setopt($curl, \CURLOPT_URL, self::API_URL);
+			curl_setopt($curl, \CURLOPT_URL, $api_url);
 			curl_setopt($curl, \CURLOPT_TIMEOUT, 5);
 			curl_setopt($curl, \CURLOPT_POST, 1);
 			curl_setopt($curl, \CURLOPT_RETURNTRANSFER, 1);
diff --git a/common/framework/sms.php b/common/framework/sms.php
index 2df841fc7..37b8f7b96 100644
--- a/common/framework/sms.php
+++ b/common/framework/sms.php
@@ -92,6 +92,7 @@ class SMS
 					'name' => $class_name::getName(),
 					'required' => $class_name::getRequiredConfig(),
 					'optional' => $class_name::getOptionalConfig(),
+					'api_urls' => method_exists($class_name, 'getApiUrls') ? $class_name::getApiUrls() : [],
 					'api_types' => $class_name::getAPITypes(),
 					'api_spec' => $class_name::getAPISpec(),
 				);
diff --git a/modules/admin/tpl/config_notification.html b/modules/admin/tpl/config_notification.html
index c9f854615..8443dab06 100644
--- a/modules/admin/tpl/config_notification.html
+++ b/modules/admin/tpl/config_notification.html
@@ -245,6 +245,20 @@
 			
 				{@ $conf_value = escape(config("sms.$driver_name.$conf_name"))}
 				
+				<!--@if($conf_name === 'api_url')-->
+				<div class="x_control-group hidden-by-default show-for-{$driver_name}">
+					<label class="x_control-label" for="sms_{$driver_name}_api_key">{$lang->cmd_advanced_mailer_api_url}</label>
+					<div class="x_controls">
+						{@ $conf_exists = config("sms.$driver_name.api_key")}
+						<select type="select" name="sms_{$driver_name}_api_url" id="sms_{$driver_name}_api_url">
+							<!--@foreach($driver_definition['api_urls'] as $api_url => $api_url_name)-->
+								<option value="{$api_url}" selected="selected"|cond="$conf_value === $api_url || (!$conf_value && $conf_exists && $api_url === array_last_key($driver_definition['api_urls']))">{$api_url_name}</option>
+							<!--@endforeach-->
+						</select>
+					</div>
+				</div>
+				<!--@end-->
+				
 				<!--@if($conf_name === 'api_user')-->
 				<div class="x_control-group hidden-by-default show-for-{$driver_name}">
 					<label class="x_control-label" for="sms_{$driver_name}_api_user">{$lang->cmd_advanced_mailer_api_user}</label>
diff --git a/modules/advanced_mailer/lang/en.php b/modules/advanced_mailer/lang/en.php
index 59fde231a..3664f13c5 100644
--- a/modules/advanced_mailer/lang/en.php
+++ b/modules/advanced_mailer/lang/en.php
@@ -28,6 +28,7 @@ $lang->cmd_advanced_mailer_smtp_security_tls = 'TLS (STARTTLS)';
 $lang->cmd_advanced_mailer_smtp_security_none = 'None';
 $lang->cmd_advanced_mailer_smtp_user = 'Username';
 $lang->cmd_advanced_mailer_smtp_pass = 'Password';
+$lang->cmd_advanced_mailer_api_url = 'API URL';
 $lang->cmd_advanced_mailer_api_key = 'API key';
 $lang->cmd_advanced_mailer_api_secret = 'API secret';
 $lang->cmd_advanced_mailer_api_domain = 'Domain';
diff --git a/modules/advanced_mailer/lang/ko.php b/modules/advanced_mailer/lang/ko.php
index 0dd70bd62..23ff9e821 100644
--- a/modules/advanced_mailer/lang/ko.php
+++ b/modules/advanced_mailer/lang/ko.php
@@ -28,6 +28,7 @@ $lang->cmd_advanced_mailer_smtp_security_tls = 'TLS (STARTTLS)';
 $lang->cmd_advanced_mailer_smtp_security_none = '사용하지 않음';
 $lang->cmd_advanced_mailer_smtp_user = '아이디';
 $lang->cmd_advanced_mailer_smtp_pass = '비밀번호';
+$lang->cmd_advanced_mailer_api_url = 'API URL';
 $lang->cmd_advanced_mailer_api_key = 'API 키';
 $lang->cmd_advanced_mailer_api_secret = 'API 비밀';
 $lang->cmd_advanced_mailer_api_domain = '도메인';