diff --git a/docs/credits.rst b/docs/credits.rst
index 83ee5bf7..e34fee17 100644
--- a/docs/credits.rst
+++ b/docs/credits.rst
@@ -93,6 +93,10 @@ The following people have contributed to the development of PHP Server Monitor:
 
   * Discord webhook support
 
+* Łukasz Szczepański - https://github.com/NixNotCastey
+
+  * PromoSMS gateway
+
 Translators
 +++++++++++
 
diff --git a/src/includes/functions.inc.php b/src/includes/functions.inc.php
index 59717599..6a70408f 100644
--- a/src/includes/functions.inc.php
+++ b/src/includes/functions.inc.php
@@ -799,6 +799,9 @@ namespace {
             case 'smsapi':
                 $sms = new \psm\Txtmsg\SMSAPI();
                 break;
+            case 'promosms':
+                $sms = new \psm\Txtmsg\PromoSMS();
+                break;
         }
 
         // copy login information from the config file
diff --git a/src/psm/Txtmsg/PromoSMS.php b/src/psm/Txtmsg/PromoSMS.php
new file mode 100644
index 00000000..ccb024bb
--- /dev/null
+++ b/src/psm/Txtmsg/PromoSMS.php
@@ -0,0 +1,93 @@
+<?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      Łukasz Szczepański <l.szczepanski@webd.pl>
+ * @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/
+ * @since       phpservermon 3.5
+ **/
+
+namespace psm\Txtmsg;
+
+class PromoSMS extends Core
+{
+
+    /**
+     * Send sms using the PromoSMS API
+     *
+     * @var string $message
+     * @var string $this->password
+     * @var array $this->recipients
+     * @var array $headers
+     *
+     * @var resource $curl
+     * @var string $err
+     * @var int $success
+     * @var string $error
+     *
+     * @return bool|string
+     */
+    
+    public function sendSMS($message)
+    {
+        $error = "";
+        $success = 1;
+
+        $headers = array();
+        $headers[] = "Content-Type: application/x-www-form-urlencoded";
+        $headers[] = "Accept: text/json";
+        $headers[] = 'Authorization: Basic ' . base64_encode($this->username . ':' . $this->password);
+
+        $curl = curl_init();
+        curl_setopt_array($curl, array(
+            CURLOPT_URL => "https://promosms.com/api/rest/v3_2/sms",
+            CURLOPT_RETURNTRANSFER => true,
+            CURLOPT_MAXREDIRS => 10,
+            CURLOPT_TIMEOUT => 30,
+            CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
+            CURLOPT_POST => true,
+            CURLOPT_HTTPHEADER => $headers,
+            CURLOPT_POSTFIELDS => http_build_query(array(
+                'text' => htmlspecialchars($message),
+                'type' => 1,
+                'recipients' => $this->recipients,
+            ))
+        ));
+
+        $result = curl_exec($curl);
+        $httpcode = curl_getinfo($curl, CURLINFO_HTTP_CODE);
+        $err = curl_errno($curl);
+        
+        if ($err != 0 || ($httpcode != '200' && $httpcode != '201' && $httpcode != '202' && $result != "1")) {
+            $success = 0;
+            $error = "HTTP_code: " . $httpcode . ".\ncURL error (" . $err . "): " .
+                curl_strerror($err) . ". Result: " . $result . "";
+        }
+        curl_close($curl);
+
+        if ($success) {
+            return 1;
+        }
+        return $error;
+    }
+}
\ No newline at end of file