diff --git a/composer.json b/composer.json
index 8bfd7420..151b8c98 100755
--- a/composer.json
+++ b/composer.json
@@ -1,6 +1,6 @@
 {
     "name": "myparcelnl/sdk",
-    "version": "v1.2.4",
+    "version": "v1.3.0",
     "description": "This package is designed to send and receive data from MyParcel by means of an API.",
     "homepage": "https://www.myparcel.nl",
     "tags": ["MyParcel", "My Parcel", "Post NL", "PostNL"],
diff --git a/src/Helper/MyParcelCollection.php b/src/Helper/MyParcelCollection.php
index 662bb8f8..2e704779 100644
--- a/src/Helper/MyParcelCollection.php
+++ b/src/Helper/MyParcelCollection.php
@@ -239,6 +239,33 @@ public function createConcepts()
 
         return $this;
     }
+    
+     /**
+     * Delete concepts in MyParcel
+     *
+     * @return  $this
+     * @throws  \Exception
+     */
+    public function deleteConcepts()
+    {
+        /* @var $consignments MyParcelConsignmentRepository[] */
+        foreach ($this->getConsignmentsSortedByKey() as $key => $consignments) {
+            foreach ($consignments as $consignment) {
+                if ($consignment->getMyParcelConsignmentId() !== null) {
+                    $request = (new MyParcelRequest())
+                        ->setUserAgent($this->getUserAgent())
+                        ->setRequestParameters(
+                            $key,
+                            $consignment->getMyParcelConsignmentId(),
+                            MyParcelRequest::REQUEST_HEADER_DELETE
+                        )
+                        ->sendRequest('DELETE');
+                }
+            }
+        }
+
+        return $this;
+    }
 
     /**
      * Get all current data
@@ -368,7 +395,7 @@ public function setPdfOfLabels($positions = false)
      * @return $this
      * @throws \Exception
      */
-    public function downloadPdfOfLabels()
+    public function downloadPdfOfLabels($inline_download = false)
     {
         if ($this->label_pdf == null) {
             throw new \Exception('First set label_pdf key with setPdfOfLabels() before running downloadPdfOfLabels()');
@@ -376,7 +403,7 @@ public function downloadPdfOfLabels()
 
         header('Content-Type: application/pdf');
         header('Content-Length: ' . strlen($this->label_pdf));
-        header('Content-disposition: attachment; filename="' . self::PREFIX_PDF_FILENAME . gmdate('Y-M-d H-i-s') . '.pdf"');
+        header('Content-disposition: '.($inline_download === true ? "inline" : "attachment").'; filename="' . self::PREFIX_PDF_FILENAME . gmdate('Y-M-d H-i-s') . '.pdf"');
         header('Cache-Control: public, must-revalidate, max-age=0');
         header('Pragma: public');
         header('Expires: Sat, 26 Jul 1997 05:00:00 GMT');
@@ -611,4 +638,4 @@ private function getConsignmentsSortedByKey()
 
         return $aConsignments;
     }
-}
\ No newline at end of file
+}
diff --git a/src/Model/MyParcelRequest.php b/src/Model/MyParcelRequest.php
index c8cf0585..e23cf039 100644
--- a/src/Model/MyParcelRequest.php
+++ b/src/Model/MyParcelRequest.php
@@ -37,6 +37,7 @@ class MyParcelRequest
     const REQUEST_HEADER_RETRIEVE_LABEL_LINK = 'Accept: application/json; charset=utf8';
     const REQUEST_HEADER_RETRIEVE_LABEL_PDF = 'Accept: application/pdf';
     const REQUEST_HEADER_RETURN = 'Content-Type: application/vnd.return_shipment+json; charset=utf-8';
+    const REQUEST_HEADER_DELETE = 'Accept: application/json; charset=utf8';
 
     /**
      * @var string
@@ -141,6 +142,14 @@ public function sendRequest($method = 'POST', $uri = self::REQUEST_TYPE_SHIPMENT
             $body = $this->body;
 
             $request->write('POST', $url, '1.1', $header, $body);
+        } else if ($method == 'DELETE') {
+
+            //complete request url
+            if ($this->body) {
+                $url .= '/' . $this->body;
+            }
+
+            $request->write('DELETE', $url, '1.1', $header);
         } else {
             
             //complete request url
@@ -283,4 +292,4 @@ public function getUserAgentFromComposer()
 
         return null;
     }
-}
\ No newline at end of file
+}