diff --git a/app/Services/PurchaseOrder/MarkSent.php b/app/Services/PurchaseOrder/MarkSent.php
new file mode 100644
index 000000000000..fe51346066d0
--- /dev/null
+++ b/app/Services/PurchaseOrder/MarkSent.php
@@ -0,0 +1,45 @@
+<?php
+
+
+namespace App\Services\PurchaseOrder;
+
+
+use App\Events\PurchaseOrder\PurchaseOrderWasMarkedSent;
+use App\Models\PurchaseOrder;
+use App\Utils\Ninja;
+
+class MarkSent
+{
+    private $client;
+
+    private $purchase_order;
+
+    public function __construct($client, $purchase_order)
+    {
+        $this->client = $client;
+        $this->purchase_order = $purchase_order;
+    }
+
+    public function run()
+    {
+
+        /* Return immediately if status is not draft */
+        if ($this->purchase_order->status_id != PurchaseOrder::STATUS_DRAFT) {
+            return $this->purchase_order;
+        }
+
+        $this->purchase_order->markInvitationsSent();
+
+        $this->purchase_order
+            ->service()
+            ->setStatus(PurchaseOrder::STATUS_SENT)
+            ->applyNumber()
+            //  ->adjustBalance($this->purchase_order->amount)
+            //  ->touchPdf()
+            ->save();
+
+        event(new PurchaseOrderWasMarkedSent($this->purchase_order, $this->purchase_order->company, Ninja::eventVars(auth()->user() ? auth()->user()->id : null)));
+
+        return $this->purchase_order;
+    }
+}