diff --git a/app/Mail/InvalidQualityMail.php b/app/Mail/InvalidQualityMail.php
new file mode 100644
index 0000000..3a03d59
--- /dev/null
+++ b/app/Mail/InvalidQualityMail.php
@@ -0,0 +1,135 @@
+<?php
+
+namespace App\Mail;
+
+use Illuminate\Bus\Queueable;
+use Illuminate\Contracts\Queue\ShouldQueue;
+use Illuminate\Mail\Mailable;
+use Illuminate\Mail\Mailables\Content;
+use Illuminate\Mail\Mailables\Envelope;
+use Illuminate\Queue\SerializesModels;
+
+class InvalidQualityMail extends Mailable
+{
+    use Queueable, SerializesModels;
+
+    /**
+     * Create a new message instance.
+     */
+    public $serial;
+    public $invoiceNumber;
+    public $mplantName;
+    public $mProdOrder;
+    public $mPartNo;
+    public $mailType;
+    public $greeting;
+    public $subjectLine;
+
+    public $itemCode;
+    public function __construct($parNo, $mProdOrder, $mplantName, $mailType = 'InvalidPartNumber')
+    {
+        $this->mPartNo = $parNo;
+        $this->mProdOrder = $mProdOrder;
+        $this->mplantName = $mplantName;
+        $this->mailType = $mailType;
+    }
+
+    public function envelope(): Envelope
+    {
+        // dynamic subject based on mail type
+        switch ($this->mailType) {
+            case 'InvalidPartNumber2':
+                $this->subjectLine = "Invalid Part Number 2 Scanned ({$this->mplantName})";
+                break;
+            case 'InvalidPartNumber3':
+                $this->subjectLine = "Invalid Part Number 3 Scanned ({$this->mplantName})";
+                break;
+            case 'InvalidPartNumber4':
+                $this->subjectLine = "Invalid Part Number 4 Scanned ({$this->mplantName})";
+                break;
+            case 'InvalidPartNumber5':
+                $this->subjectLine = "Invalid Part Number 5 Scanned ({$this->mplantName})";
+                break;
+            case 'InvalidPartNumber':
+            default:
+                $this->subjectLine = "Invalid Part Number 1 Scanned ({$this->mplantName})";
+                break;
+        }
+
+        return new Envelope(
+            subject: $this->subjectLine,
+        );
+    }
+
+    public function content(): Content
+    {
+        // dynamic greeting/message body
+        switch ($this->mailType) {
+            case 'InvalidPartNumber2':
+                $this->greeting = "
+                    Dear Sir/Madam,<br><br>
+                    Please note that the scanned part number appears to be incorrect.<br>
+                    <b>Plant:</b> {$this->mplantName}<br>
+                    <b>Production Order:</b> {$this->mProdOrder}<br>
+                    <b>Scanned Part Number 2:</b> {$this->mPartNo}<br>
+                ";
+                break;
+            case 'InvalidPartNumber3':
+                $this->greeting = "
+                    Dear Sir/Madam,<br><br>
+                    Please note that the scanned part number appears to be incorrect.<br>
+                    <b>Plant:</b> {$this->mplantName}<br>
+                    <b>Production Order:</b> {$this->mProdOrder}<br>
+                    <b>Scanned Part Number 3:</b> {$this->mPartNo}<br>
+                ";
+                break;
+            case 'InvalidPartNumber4':
+                $this->greeting = "
+                    Dear Sir/Madam,<br><br>
+                    Please note that the scanned part number appears to be incorrect.<br>
+                    <b>Plant:</b> {$this->mplantName}<br>
+                    <b>Production Order:</b> {$this->mProdOrder}<br>
+                    <b>Scanned Part Number 4:</b> {$this->mPartNo}<br>
+                ";
+                break;
+            case 'InvalidPartNumber5':
+                $this->greeting = "
+                    Dear Sir/Madam,<br><br>
+                    Please note that the scanned part number appears to be incorrect.<br>
+                    <b>Plant:</b> {$this->mplantName}<br>
+                    <b>Production Order:</b> {$this->mProdOrder}<br>
+                    <b>Scanned Part Number 5:</b> {$this->mPartNo}<br>
+                ";
+                break;
+            case 'InvalidPartNumber':
+            default:
+                $this->greeting = "
+                    Dear Sir/Madam,<br><br>
+                    Please note that the scanned part number appears to be incorrect.<br>
+                    <b>Plant:</b> {$this->mplantName}<br>
+                    <b>Production Order:</b> {$this->mProdOrder}<br>
+                    <b>Scanned Part Number 1:</b> {$this->mPartNo}<br>
+                ";
+                break;
+        }
+
+        return new Content(
+            view: 'mail.invalid-serial',
+            with: [
+                'company' => "CRI Digital Manufacturing Solutions",
+                'greeting' => $this->greeting,
+                'wishes' => "Thanks & Regards,<br>CRI Digital Manufacturing Solutions",
+            ],
+        );
+    }
+
+    /**
+     * Get the attachments for the message.
+     *
+     * @return array<int, \Illuminate\Mail\Mailables\Attachment>
+     */
+    public function attachments(): array
+    {
+        return [];
+    }
+}