diff --git a/src/OneSignalClient.php b/src/OneSignalClient.php
index 0171e22..b88b121 100644
--- a/src/OneSignalClient.php
+++ b/src/OneSignalClient.php
@@ -27,10 +27,83 @@ public function testCredentials() {
         return "APP ID: ".$this->appId." REST: ".$this->restApiKey;
     }
 
-    public function sendNotification($parameters = []){
+    private function requiresAuth() {
         $this->headers['headers']['Authorization'] = 'Basic '.$this->restApiKey;
+    }
+
+    private function usesJSON() {
         $this->headers['headers']['Content-Type'] = 'application/json';
+    }
+
+    public function sendNotificationToUser($message, $userId, $url = null, $data = null) {
+        $contents = array(
+            "en" => $message
+        );
+
+        $params = array(
+            'app_id' => $this->appId,
+            'contents' => $contents,
+            'include_player_ids' => array($userId)
+        );
+
+        if (isset($url)) {
+            $params['url'] = $url;
+        }
+
+        if (isset($data)) {
+            $params['data'] = $data;
+        }
+
+        $this->sendNotificationCustom($params);
+    }
+
+    public function sendNotificationToAll($message, $data = null) {
+        $contents = array(
+            "en" => $message
+        );
+
+        $params = array(
+            'app_id' => $this->appId,
+            'contents' => $contents,
+            'included_segments' => array('All')
+        );
+
+        if (isset($data)) {
+            $params['data'] = $data;
+        }
+
+        $this->sendNotificationCustom($params);
+    }
+
+    public function sendNotificationToSegment($message, $segments, $data = null) {
+        $contents = array(
+            "en" => $message
+        );
+
+        $params = array(
+            'app_id' => $this->appId,
+            'contents' => $contents,
+            'included_segments' => array('All')
+        );
+
+        if (isset($data)) {
+            $params['data'] = $data;
+        }
+
+        $this->sendNotificationCustom($params);
+    }
+
+    /**
+     * Send a notification with custom parameters defined in
+     * https://documentation.onesignal.com/v2.0/docs/notifications-create-notification
+     * @param array $parameters
+     * @return mixed
+     */
+    public function sendNotificationCustom($parameters = []){
+        $this->requiresAuth();
+        $this->usesJSON();
         $this->headers['body'] = json_encode($parameters);
+        $this->headers['verify'] = false;
         return $this->post("notifications");
     }
 
diff --git a/tests/test.php b/tests/test.php
index 6e62fd4..2e7ea7a 100644
--- a/tests/test.php
+++ b/tests/test.php
@@ -10,4 +10,5 @@
     getenv('REST_API_KEY'),
     getenv('USER_AUTH_KEY'));
 
-echo $client->testCredentials();
\ No newline at end of file
+echo $client->testCredentials();
+$client->sendNotificationToUser(".","4bc5da02-1722-4fee-943d-c8b5ccd507a2");
\ No newline at end of file