diff --git a/src/psm/Txtmsg/GatewayAPI.php b/src/psm/Txtmsg/GatewayAPI.php
new file mode 100644
index 00000000..46138197
--- /dev/null
+++ b/src/psm/Txtmsg/GatewayAPI.php
@@ -0,0 +1,96 @@
+<?php
+/**
+ * PHP Server Monitor
+ * Monitor your servers and websites.
+ *
+ * This file is part of PHP Server Monitor.
+ * PHP Server Monitor is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * PHP Server Monitor is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with PHP Server Monitor.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * @package     phpservermon
+ * @author      Ward Pieters <ward@wardpieters.nl>
+ * @copyright   Copyright (c) 2008-2017 Pepijn Over <pep@mailbox.org>
+ * @license     http://www.gnu.org/licenses/gpl.txt GNU GPL v3
+ * @version     Release: @package_version@
+ * @link        http://www.phpservermonitor.org/
+ **/
+
+namespace psm\Txtmsg;
+
+class GatewayAPI extends Core {
+	
+	/**
+	* Send sms using GatewayAPI
+	* @var string $message
+	* @var array $this->recipients
+	* @var string $recipient
+	* @var string $this->password
+	* @var string $this->originator
+	* @var int $success
+	* @var string $error
+	* @return int or string
+	*/
+
+	public function sendSMS($message) {
+		$sender = $this->originator;
+		$apikey = $this->password;
+		$userref = $this->userref;
+		$destaddr = $this->destaddr;
+		$recipients = $this->recipients;
+		
+		$errors = array();
+		
+		if(is_null($destaddr)) $destaddr = 'MOBILE';
+		if(is_null($userref)) $userref = '';
+		
+		
+		foreach($recipients as $recipient) {
+			$json = [
+				'sender' => $sender,
+				'message' => $message,
+				'recipients' => [],
+				'destaddr' => $destaddr,
+				'userref' => $userref,
+			];
+			
+			$json['recipients'][] = ['msisdn' => $recipient];
+			
+			$ch = curl_init();
+			curl_setopt($ch,CURLOPT_URL, "https://gatewayapi.com/rest/mtsms");
+			curl_setopt($ch,CURLOPT_HTTPHEADER, array("Content-Type: application/json"));
+			curl_setopt($ch,CURLOPT_USERPWD, $apikey.":");
+			curl_setopt($ch,CURLOPT_POSTFIELDS, json_encode($json));
+			curl_setopt($ch,CURLOPT_RETURNTRANSFER, true);
+			
+			$result = curl_exec($ch);
+			$httpcode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
+			curl_close($ch);
+			
+			$result = json_decode($result,true);
+			$addidtional_information = array();
+			foreach($result as $key => $value) { if($key != 'ids') $addidtional_information[$key] = $value; }
+			
+			if($httpcode == 200) {
+				// SMS is gelukt
+				$output = array('success' => true, 'ids' => $result['ids'], 'addidtional_information' => $addidtional_information);
+			}
+			else {
+				// SMS is niet gelukt
+				$output = array('success' => false, 'code' => $result['code'], 'message' => $result['message'], 'variables' => $result['variables']);
+				array_push($errors, $output);
+			}
+		}
+		if(!empty($errors)) return false;
+		else return true;
+	}
+}