diff --git a/packages/Webkul/Admin/src/Http/Controllers/Sales/InvoiceController.php b/packages/Webkul/Admin/src/Http/Controllers/Sales/InvoiceController.php
index 363cfcabd..25acab56c 100755
--- a/packages/Webkul/Admin/src/Http/Controllers/Sales/InvoiceController.php
+++ b/packages/Webkul/Admin/src/Http/Controllers/Sales/InvoiceController.php
@@ -2,14 +2,16 @@
 
 namespace Webkul\Admin\Http\Controllers\Sales;
 
+use Illuminate\Http\Request;
 use Webkul\Admin\Http\Controllers\Controller;
+use Webkul\Admin\Traits\Mails;
 use Webkul\Core\Traits\PDFHandler;
 use Webkul\Sales\Repositories\InvoiceRepository;
 use Webkul\Sales\Repositories\OrderRepository;
 
 class InvoiceController extends Controller
 {
-    use PDFHandler;
+    use Mails, PDFHandler;
 
     /**
      * Display a listing of the resource.
@@ -133,6 +135,34 @@ class InvoiceController extends Controller
         return view($this->_config['view'], compact('invoice'));
     }
 
+    /**
+     * Send duplicate invoice.
+     *
+     * @param  \Illuminate\Http\Request  $request
+     * @param  int  $id
+     * @return \Illuminate\Http\Response
+     */
+    public function sendDuplicateInvoice(Request $request, $id)
+    {
+        $request->validate([
+            'email' => 'required|email',
+        ]);
+
+        $invoice = $this->invoiceRepository->findOrFail($id);
+
+        if ($invoice) {
+            $this->sendDuplicateInvoiceMail($invoice, $request->email);
+
+            session()->flash('success', __('admin::app.sales.invoices.invoice-sent'));
+
+            return redirect()->back();
+        }
+
+        session()->flash('error', __('admin::app.response.something-went-wrong'));
+
+        return redirect()->back();
+    }
+
     /**
      * Print and download the for the specified resource.
      *
diff --git a/packages/Webkul/Admin/src/Mail/DuplicateInvoiceNotification.php b/packages/Webkul/Admin/src/Mail/DuplicateInvoiceNotification.php
new file mode 100755
index 000000000..da2473c29
--- /dev/null
+++ b/packages/Webkul/Admin/src/Mail/DuplicateInvoiceNotification.php
@@ -0,0 +1,57 @@
+<?php
+
+namespace Webkul\Admin\Mail;
+
+use Illuminate\Bus\Queueable;
+use Illuminate\Mail\Mailable;
+use Illuminate\Queue\SerializesModels;
+
+class DuplicateInvoiceNotification extends Mailable
+{
+    use Queueable, SerializesModels;
+
+    /**
+     * The invoice instance.
+     *
+     * @var  \Webkul\Customer\Contracts\Invoice
+     */
+    public $invoice;
+
+    /**
+     * Customer email.
+     *
+     * @var string
+     */
+    public $customerEmail;
+
+    /**
+     * Create a new message instance.
+     *
+     * @param  \Webkul\Customer\Contracts\Invoice  $invoice
+     * @param  string  $customerEmail
+     * @return void
+     */
+    public function __construct($invoice, $customerEmail)
+    {
+        $this->invoice = $invoice;
+
+        $this->customerEmail = $customerEmail;
+    }
+
+    /**
+     * Build the message.
+     *
+     * @return $this
+     */
+    public function build()
+    {
+        $order = $this->invoice->order;
+
+        $email = $this->customerEmail ?? $order->customer_email;
+
+        return $this->from(core()->getSenderEmailDetails()['email'], core()->getSenderEmailDetails()['name'])
+            ->to($email, $order->customer_full_name)
+            ->subject(trans('shop::app.mail.invoice.subject', ['order_id' => $order->increment_id]))
+            ->view('shop::emails.sales.new-invoice');
+    }
+}
diff --git a/packages/Webkul/Admin/src/Resources/lang/ar/app.php b/packages/Webkul/Admin/src/Resources/lang/ar/app.php
index 16bb94f10..4c2fd8726 100644
--- a/packages/Webkul/Admin/src/Resources/lang/ar/app.php
+++ b/packages/Webkul/Admin/src/Resources/lang/ar/app.php
@@ -401,32 +401,35 @@ return [
         ],
 
         'invoices' => [
-            'title'          => 'الفواتير',
-            'id'             => 'Id',
-            'invoice-id'     => 'هوية صوتية',
-            'invoice'        => 'فاتورة',
-            'date'           => 'تاريخ الفاتورة',
-            'order-id'       => 'Id طلب',
-            'customer-name'  => 'اسم الزبون',
-            'status'         => 'الحالة',
-            'amount'         => 'المبلغ',
-            'action'         => 'الإجراء',
-            'add-title'      => 'أنشئ الفاتورة',
-            'save-btn-title' => 'احفظ الفاتورة',
-            'qty'            => 'Qty',
-            'qty-ordered'    => 'تعداد سفارشات',
-            'qty-to-invoice' => 'qty إلى فاتورة',
-            'view-title'     => '#:invoice_id فاتورة',
-            'bill-to'        => 'بيل إلى',
-            'ship-to'        => 'السفينة إلى',
-            'print'          => 'اطبع',
-            'order-date'     => 'تاريخ الطلب',
-            'invalid-qty'    => 'We found an invalid quantity to invoice items.',
-            'creation-error' => 'لا يسمح بإنشاء الفواتير.',
-            'product-error'  => 'ولا يمكن إعداد الفاتورة بدون منتجات.',
-            'status-overdue' => 'Overdue',
-            'status-pending' => 'Pending Payment',
-            'status-paid'    => 'Paid',
+            'title'                  => 'الفواتير',
+            'id'                     => 'Id',
+            'invoice-id'             => 'هوية صوتية',
+            'invoice'                => 'فاتورة',
+            'date'                   => 'تاريخ الفاتورة',
+            'order-id'               => 'Id طلب',
+            'customer-name'          => 'اسم الزبون',
+            'status'                 => 'الحالة',
+            'amount'                 => 'المبلغ',
+            'action'                 => 'الإجراء',
+            'add-title'              => 'أنشئ الفاتورة',
+            'save-btn-title'         => 'احفظ الفاتورة',
+            'send-duplicate-invoice' => 'Send Duplicate Invoice',
+            'send'                   => 'Send',
+            'invoice-sent'           => 'Invoice sent successfully!',
+            'qty'                    => 'Qty',
+            'qty-ordered'            => 'تعداد سفارشات',
+            'qty-to-invoice'         => 'qty إلى فاتورة',
+            'view-title'             => '#:invoice_id فاتورة',
+            'bill-to'                => 'بيل إلى',
+            'ship-to'                => 'السفينة إلى',
+            'print'                  => 'اطبع',
+            'order-date'             => 'تاريخ الطلب',
+            'invalid-qty'            => 'We found an invalid quantity to invoice items.',
+            'creation-error'         => 'لا يسمح بإنشاء الفواتير.',
+            'product-error'          => 'ولا يمكن إعداد الفاتورة بدون منتجات.',
+            'status-overdue'         => 'Overdue',
+            'status-pending'         => 'Pending Payment',
+            'status-paid'            => 'Paid',
         ],
 
         'shipments' => [
diff --git a/packages/Webkul/Admin/src/Resources/lang/de/app.php b/packages/Webkul/Admin/src/Resources/lang/de/app.php
index c9d4a0ab7..b37ac6f05 100755
--- a/packages/Webkul/Admin/src/Resources/lang/de/app.php
+++ b/packages/Webkul/Admin/src/Resources/lang/de/app.php
@@ -397,31 +397,34 @@ return [
         ],
         'invoices'      =>
         [
-            'title'          => 'Rechnungen',
-            'id'             => 'Id',
-            'invoice-id'     => 'Rechnungsnummer',
-            'date'           => 'Rechnungsdatum',
-            'order-id'       => 'Auftragsnummer',
-            'customer-name'  => 'Name des Kunden',
-            'status'         => 'Status',
-            'amount'         => 'Betrag',
-            'action'         => 'Aktion',
-            'add-title'      => 'Rechnung erstellen',
-            'save-btn-title' => 'Rechnung speichern',
-            'qty'            => 'Menge',
-            'qty-ordered'    => 'Bestellte Menge',
-            'qty-to-invoice' => 'Menge in Rechnung zu stellen',
-            'view-title'     => 'Rechnung #:invoice_id',
-            'bill-to'        => 'Rechnung an',
-            'ship-to'        => 'Versenden an',
-            'print'          => 'Drucken',
-            'order-date'     => 'Bestell-Datum',
-            'invalid-qty'    => 'We found an invalid quantity to invoice items.',
-            'creation-error' => 'Die Erstellung einer Bestellrechnung ist nicht zulässig.',
-            'product-error'  => 'Eine Rechnung kann nicht ohne Produkte erstellt werden.',
-            'status-overdue' => 'Overdue',
-            'status-pending' => 'Pending Payment',
-            'status-paid'    => 'Paid',
+            'title'                  => 'Rechnungen',
+            'id'                     => 'Id',
+            'invoice-id'             => 'Rechnungsnummer',
+            'date'                   => 'Rechnungsdatum',
+            'order-id'               => 'Auftragsnummer',
+            'customer-name'          => 'Name des Kunden',
+            'status'                 => 'Status',
+            'amount'                 => 'Betrag',
+            'action'                 => 'Aktion',
+            'add-title'              => 'Rechnung erstellen',
+            'save-btn-title'         => 'Rechnung speichern',
+            'send-duplicate-invoice' => 'Send Duplicate Invoice',
+            'send'                   => 'Send',
+            'invoice-sent'           => 'Invoice sent successfully!',
+            'qty'                    => 'Menge',
+            'qty-ordered'            => 'Bestellte Menge',
+            'qty-to-invoice'         => 'Menge in Rechnung zu stellen',
+            'view-title'             => 'Rechnung #:invoice_id',
+            'bill-to'                => 'Rechnung an',
+            'ship-to'                => 'Versenden an',
+            'print'                  => 'Drucken',
+            'order-date'             => 'Bestell-Datum',
+            'invalid-qty'            => 'We found an invalid quantity to invoice items.',
+            'creation-error'         => 'Die Erstellung einer Bestellrechnung ist nicht zulässig.',
+            'product-error'          => 'Eine Rechnung kann nicht ohne Produkte erstellt werden.',
+            'status-overdue'         => 'Overdue',
+            'status-pending'         => 'Pending Payment',
+            'status-paid'            => 'Paid',
         ],
         'shipments'     =>
         [
diff --git a/packages/Webkul/Admin/src/Resources/lang/en/app.php b/packages/Webkul/Admin/src/Resources/lang/en/app.php
index 4a7b9d088..0fb0f2756 100755
--- a/packages/Webkul/Admin/src/Resources/lang/en/app.php
+++ b/packages/Webkul/Admin/src/Resources/lang/en/app.php
@@ -413,32 +413,35 @@ return [
         ],
 
         'invoices' => [
-            'title'          => 'Invoices',
-            'id'             => 'ID',
-            'invoice'        => 'Invoice',
-            'invoice-id'     => 'Invoice ID',
-            'date'           => 'Invoice Date',
-            'order-id'       => 'Order ID',
-            'customer-name'  => 'Customer Name',
-            'status'         => 'Status',
-            'amount'         => 'Amount',
-            'action'         => 'Action',
-            'add-title'      => 'Create Invoice',
-            'save-btn-title' => 'Save Invoice',
-            'qty'            => 'Qty',
-            'qty-ordered'    => 'Qty Ordered',
-            'qty-to-invoice' => 'Qty to Invoice',
-            'view-title'     => 'Invoice #:invoice_id',
-            'bill-to'        => 'Bill to',
-            'ship-to'        => 'Ship to',
-            'print'          => 'Print',
-            'order-date'     => 'Order Date',
-            'invalid-qty'    => 'We found an invalid quantity to invoice items.',
-            'creation-error' => 'Order invoice creation is not allowed.',
-            'product-error'  => 'Invoice can not be created without products.',
-            'status-overdue' => 'Overdue',
-            'status-pending' => 'Pending Payment',
-            'status-paid'    => 'Paid',
+            'title'                  => 'Invoices',
+            'id'                     => 'ID',
+            'invoice'                => 'Invoice',
+            'invoice-id'             => 'Invoice ID',
+            'date'                   => 'Invoice Date',
+            'order-id'               => 'Order ID',
+            'customer-name'          => 'Customer Name',
+            'status'                 => 'Status',
+            'amount'                 => 'Amount',
+            'action'                 => 'Action',
+            'add-title'              => 'Create Invoice',
+            'save-btn-title'         => 'Save Invoice',
+            'send-duplicate-invoice' => 'Send Duplicate Invoice',
+            'send'                   => 'Send',
+            'invoice-sent'           => 'Invoice sent successfully!',
+            'qty'                    => 'Qty',
+            'qty-ordered'            => 'Qty Ordered',
+            'qty-to-invoice'         => 'Qty to Invoice',
+            'view-title'             => 'Invoice #:invoice_id',
+            'bill-to'                => 'Bill to',
+            'ship-to'                => 'Ship to',
+            'print'                  => 'Print',
+            'order-date'             => 'Order Date',
+            'invalid-qty'            => 'We found an invalid quantity to invoice items.',
+            'creation-error'         => 'Order invoice creation is not allowed.',
+            'product-error'          => 'Invoice can not be created without products.',
+            'status-overdue'         => 'Overdue',
+            'status-pending'         => 'Pending Payment',
+            'status-paid'            => 'Paid',
         ],
 
         'shipments' => [
diff --git a/packages/Webkul/Admin/src/Resources/lang/es/app.php b/packages/Webkul/Admin/src/Resources/lang/es/app.php
index b6284418b..7cf504364 100644
--- a/packages/Webkul/Admin/src/Resources/lang/es/app.php
+++ b/packages/Webkul/Admin/src/Resources/lang/es/app.php
@@ -411,32 +411,35 @@ return [
         ],
 
         'invoices' => [
-            'title'          => 'Facturas',
-            'id'             => 'Id',
-            'invoice-id'     => 'Factura #',
-            'invoice'        => 'Factura',
-            'date'           => 'Fecha de factura',
-            'order-id'       => 'Pedido #',
-            'customer-name'  => 'Nombre del cliente',
-            'status'         => 'Estado',
-            'amount'         => 'Monto',
-            'action'         => 'Acción',
-            'add-title'      => 'Crear factura',
-            'save-btn-title' => 'Guardar factura',
-            'qty'            => 'Cant',
-            'qty-ordered'    => 'Cant pedido',
-            'qty-to-invoice' => 'Cant a facturar',
-            'view-title'     => 'Factura #:invoice_id',
-            'bill-to'        => 'Facturar a',
-            'ship-to'        => 'Enviar a',
-            'print'          => 'Imprimir',
-            'order-date'     => 'Fecha del pedido',
-            'invalid-qty'    => 'We found an invalid quantity to invoice items.',
-            'creation-error' => 'La creación de facturas al pedido no está permitida.',
-            'product-error'  => 'La factura no puede ser creada sin productos.',
-            'status-overdue' => 'Overdue',
-            'status-pending' => 'Pending Payment',
-            'status-paid'    => 'Paid',
+            'title'                  => 'Facturas',
+            'id'                     => 'Id',
+            'invoice-id'             => 'Factura #',
+            'invoice'                => 'Factura',
+            'date'                   => 'Fecha de factura',
+            'order-id'               => 'Pedido #',
+            'customer-name'          => 'Nombre del cliente',
+            'status'                 => 'Estado',
+            'amount'                 => 'Monto',
+            'action'                 => 'Acción',
+            'add-title'              => 'Crear factura',
+            'save-btn-title'         => 'Guardar factura',
+            'send-duplicate-invoice' => 'Send Duplicate Invoice',
+            'send'                   => 'Send',
+            'invoice-sent'           => 'Invoice sent successfully!',
+            'qty'                    => 'Cant',
+            'qty-ordered'            => 'Cant pedido',
+            'qty-to-invoice'         => 'Cant a facturar',
+            'view-title'             => 'Factura #:invoice_id',
+            'bill-to'                => 'Facturar a',
+            'ship-to'                => 'Enviar a',
+            'print'                  => 'Imprimir',
+            'order-date'             => 'Fecha del pedido',
+            'invalid-qty'            => 'We found an invalid quantity to invoice items.',
+            'creation-error'         => 'La creación de facturas al pedido no está permitida.',
+            'product-error'          => 'La factura no puede ser creada sin productos.',
+            'status-overdue'         => 'Overdue',
+            'status-pending'         => 'Pending Payment',
+            'status-paid'            => 'Paid',
         ],
 
         'shipments' => [
diff --git a/packages/Webkul/Admin/src/Resources/lang/fa/app.php b/packages/Webkul/Admin/src/Resources/lang/fa/app.php
index 7df608a8e..d299ae91a 100644
--- a/packages/Webkul/Admin/src/Resources/lang/fa/app.php
+++ b/packages/Webkul/Admin/src/Resources/lang/fa/app.php
@@ -404,32 +404,35 @@ return [
         ],
 
         'invoices' => [
-            'title'          => 'صورت حساب',
-            'id'             => 'شناسه',
-            'invoice-id'     => 'شناسه صورت حساب',
-            'invoice'        => 'صورتحساب',
-            'date'           => 'تاریخ صورت حساب',
-            'order-id'       => 'سفارش',
-            'customer-name'  => 'نام مشتری',
-            'status'         => 'وضعیت',
-            'amount'         => 'میزان',
-            'action'         => 'عملیات',
-            'add-title'      => 'ایجاد فاکتور',
-            'save-btn-title' => 'ایجاد فاکتور',
-            'qty'            => 'مقدار',
-            'qty-ordered'    => 'سفارش داده شده',
-            'qty-to-invoice' => 'مقدار به فاکتور',
-            'view-title'     => '#:invoice_id صورت حساب',
-            'bill-to'        => 'صورت حساب به',
-            'ship-to'        => 'حمل به',
-            'print'          => 'چاپ',
-            'order-date'     => 'تاریخ سفارش',
-            'invalid-qty'    => 'We found an invalid quantity to invoice items.',
-            'creation-error' => 'ایجاد فاکتور سفارش مجاز نیست.',
-            'product-error'  => 'بدون محصولات نمی توان فاکتور ایجاد کرد.',
-            'status-overdue' => 'Overdue',
-            'status-pending' => 'Pending Payment',
-            'status-paid'    => 'Paid',
+            'title'                  => 'صورت حساب',
+            'id'                     => 'شناسه',
+            'invoice-id'             => 'شناسه صورت حساب',
+            'invoice'                => 'صورتحساب',
+            'date'                   => 'تاریخ صورت حساب',
+            'order-id'               => 'سفارش',
+            'customer-name'          => 'نام مشتری',
+            'status'                 => 'وضعیت',
+            'amount'                 => 'میزان',
+            'action'                 => 'عملیات',
+            'add-title'              => 'ایجاد فاکتور',
+            'save-btn-title'         => 'ایجاد فاکتور',
+            'send-duplicate-invoice' => 'Send Duplicate Invoice',
+            'send'                   => 'Send',
+            'invoice-sent'           => 'Invoice sent successfully!',
+            'qty'                    => 'مقدار',
+            'qty-ordered'            => 'سفارش داده شده',
+            'qty-to-invoice'         => 'مقدار به فاکتور',
+            'view-title'             => '#:invoice_id صورت حساب',
+            'bill-to'                => 'صورت حساب به',
+            'ship-to'                => 'حمل به',
+            'print'                  => 'چاپ',
+            'order-date'             => 'تاریخ سفارش',
+            'invalid-qty'            => 'We found an invalid quantity to invoice items.',
+            'creation-error'         => 'ایجاد فاکتور سفارش مجاز نیست.',
+            'product-error'          => 'بدون محصولات نمی توان فاکتور ایجاد کرد.',
+            'status-overdue'         => 'Overdue',
+            'status-pending'         => 'Pending Payment',
+            'status-paid'            => 'Paid',
         ],
 
         'shipments' => [
diff --git a/packages/Webkul/Admin/src/Resources/lang/fr/app.php b/packages/Webkul/Admin/src/Resources/lang/fr/app.php
index 3d0d558b6..edcaf1037 100644
--- a/packages/Webkul/Admin/src/Resources/lang/fr/app.php
+++ b/packages/Webkul/Admin/src/Resources/lang/fr/app.php
@@ -411,32 +411,35 @@ return [
         ],
 
         'invoices' => [
-            'title'          => 'Factures',
-            'id'             => 'identifiant',
-            'invoice'        => 'Facturer',
-            'invoice-id'     => 'Identifiant de la facture',
-            'date'           => 'Date de la facture',
-            'order-id'       => 'numéro de commande',
-            'customer-name'  => 'Nom du client',
-            'status'         => 'Statut',
-            'amount'         => 'Montant',
-            'action'         => 'action',
-            'add-title'      => 'Créer une facture',
-            'save-btn-title' => 'Enregistrer la facture',
-            'qty'            => 'Qté',
-            'qty-ordered'    => 'Qté commandée',
-            'qty-to-invoice' => 'Quantité à facturer',
-            'view-title'     => 'Facture # :invoice_id',
-            'bill-to'        => 'facturer',
-            'ship-to'        => 'Envoyez à',
-            'print'          => 'Imprimer',
-            'order-date'     => 'Date de commande',
-            'invalid-qty'    => 'We found an invalid quantity to invoice items.',
-            'creation-error' => 'La création de facture de commande n\'est pas autorisée.',
-            'product-error'  => 'La facture ne peut pas être créée sans produits.',
-            'status-overdue' => 'En retard',
-            'status-pending' => 'En attente de paiement',
-            'status-paid'    => 'Payé',
+            'title'                  => 'Factures',
+            'id'                     => 'identifiant',
+            'invoice'                => 'Facturer',
+            'invoice-id'             => 'Identifiant de la facture',
+            'date'                   => 'Date de la facture',
+            'order-id'               => 'numéro de commande',
+            'customer-name'          => 'Nom du client',
+            'status'                 => 'Statut',
+            'amount'                 => 'Montant',
+            'action'                 => 'action',
+            'add-title'              => 'Créer une facture',
+            'save-btn-title'         => 'Enregistrer la facture',
+            'send-duplicate-invoice' => 'Send Duplicate Invoice',
+            'send'                   => 'Send',
+            'invoice-sent'           => 'Invoice sent successfully!',
+            'qty'                    => 'Qté',
+            'qty-ordered'            => 'Qté commandée',
+            'qty-to-invoice'         => 'Quantité à facturer',
+            'view-title'             => 'Facture # :invoice_id',
+            'bill-to'                => 'facturer',
+            'ship-to'                => 'Envoyez à',
+            'print'                  => 'Imprimer',
+            'order-date'             => 'Date de commande',
+            'invalid-qty'            => 'We found an invalid quantity to invoice items.',
+            'creation-error'         => 'La création de facture de commande n\'est pas autorisée.',
+            'product-error'          => 'La facture ne peut pas être créée sans produits.',
+            'status-overdue'         => 'En retard',
+            'status-pending'         => 'En attente de paiement',
+            'status-paid'            => 'Payé',
         ],
 
         'shipments' => [
diff --git a/packages/Webkul/Admin/src/Resources/lang/it/app.php b/packages/Webkul/Admin/src/Resources/lang/it/app.php
index b1b60cd75..cf705bce6 100644
--- a/packages/Webkul/Admin/src/Resources/lang/it/app.php
+++ b/packages/Webkul/Admin/src/Resources/lang/it/app.php
@@ -402,32 +402,35 @@ return [
         ],
 
         'invoices' => [
-            'title'          => 'Fatture',
-            'id'             => 'Id',
-            'invoice-id'     => 'Id Fattura',
-            'invoice'        => 'Fattura',
-            'date'           => 'Data Fattura',
-            'order-id'       => 'Id Ordine',
-            'customer-name'  => 'Nome Cliente',
-            'status'         => 'Stato',
-            'amount'         => 'Ammontare',
-            'action'         => 'Azione',
-            'add-title'      => 'Crea Fattura',
-            'save-btn-title' => 'Salva Fattura',
-            'qty'            => 'Qtà',
-            'qty-ordered'    => 'Qtà ordinata',
-            'qty-to-invoice' => 'Qtà da fatturare',
-            'view-title'     => 'Fattura #:invoice_id',
-            'bill-to'        => 'Fatturato a',
-            'ship-to'        => 'Spedito a',
-            'print'          => 'Stampa',
-            'order-date'     => 'Data Ordine',
-            'invalid-qty'    => 'We found an invalid quantity to invoice items.',
-            'creation-error' => 'La creazione della fattura dell\'Ordine non è consentita.',
-            'product-error'  => 'La fattura non può essere creata senza prodotti.',
-            'status-overdue' => 'Pending',
-            'status-pending' => 'Pending Payment',
-            'status-paid'    => 'Paid',
+            'title'                  => 'Fatture',
+            'id'                     => 'Id',
+            'invoice-id'             => 'Id Fattura',
+            'invoice'                => 'Fattura',
+            'date'                   => 'Data Fattura',
+            'order-id'               => 'Id Ordine',
+            'customer-name'          => 'Nome Cliente',
+            'status'                 => 'Stato',
+            'amount'                 => 'Ammontare',
+            'action'                 => 'Azione',
+            'add-title'              => 'Crea Fattura',
+            'save-btn-title'         => 'Salva Fattura',
+            'send-duplicate-invoice' => 'Send Duplicate Invoice',
+            'send'                   => 'Send',
+            'invoice-sent'           => 'Invoice sent successfully!',
+            'qty'                    => 'Qtà',
+            'qty-ordered'            => 'Qtà ordinata',
+            'qty-to-invoice'         => 'Qtà da fatturare',
+            'view-title'             => 'Fattura #:invoice_id',
+            'bill-to'                => 'Fatturato a',
+            'ship-to'                => 'Spedito a',
+            'print'                  => 'Stampa',
+            'order-date'             => 'Data Ordine',
+            'invalid-qty'            => 'We found an invalid quantity to invoice items.',
+            'creation-error'         => 'La creazione della fattura dell\'Ordine non è consentita.',
+            'product-error'          => 'La fattura non può essere creata senza prodotti.',
+            'status-overdue'         => 'Pending',
+            'status-pending'         => 'Pending Payment',
+            'status-paid'            => 'Paid',
         ],
 
         'shipments' => [
diff --git a/packages/Webkul/Admin/src/Resources/lang/nl/app.php b/packages/Webkul/Admin/src/Resources/lang/nl/app.php
index e64674532..2fc0efc6b 100644
--- a/packages/Webkul/Admin/src/Resources/lang/nl/app.php
+++ b/packages/Webkul/Admin/src/Resources/lang/nl/app.php
@@ -398,32 +398,35 @@ return [
         ],
 
         'invoices' => [
-            'title'          => 'Facturen',
-            'id'             => 'Id',
-            'invoice-id'     => 'Factuurnummer',
-            'invoice'        => 'Factuur',
-            'date'           => 'Factuur datum',
-            'order-id'       => 'Bestelnummer',
-            'customer-name'  => 'Klantnaam',
-            'status'         => 'Status',
-            'amount'         => 'Bedrag',
-            'action'         => 'Actie',
-            'add-title'      => 'Factuur aanmaken',
-            'save-btn-title' => 'Bewaar factuur',
-            'qty'            => 'Aantal',
-            'qty-ordered'    => 'Besteld aantal',
-            'qty-to-invoice' => 'Aantal te factureren',
-            'view-title'     => 'Factuur #:invoice_id',
-            'bill-to'        => 'Bill to',
-            'ship-to'        => 'Verzenden naar',
-            'print'          => 'Print',
-            'order-date'     => 'Besteldatum',
-            'invalid-qty'    => 'We found an invalid quantity to invoice items.',
-            'creation-error' => 'De bestelling staat niet toe dat er een factuur wordt aangemaakt.',
-            'product-error'  => 'Zonder producten kan er geen factuur worden aangemaakt.',
-            'status-overdue' => 'Verlopen',
-            'status-pending' => 'Wachten op betaling',
-            'status-paid'    => 'Betaald',
+            'title'                  => 'Facturen',
+            'id'                     => 'Id',
+            'invoice-id'             => 'Factuurnummer',
+            'invoice'                => 'Factuur',
+            'date'                   => 'Factuur datum',
+            'order-id'               => 'Bestelnummer',
+            'customer-name'          => 'Klantnaam',
+            'status'                 => 'Status',
+            'amount'                 => 'Bedrag',
+            'action'                 => 'Actie',
+            'add-title'              => 'Factuur aanmaken',
+            'save-btn-title'         => 'Bewaar factuur',
+            'send-duplicate-invoice' => 'Send Duplicate Invoice',
+            'send'                   => 'Send',
+            'invoice-sent'           => 'Invoice sent successfully!',
+            'qty'                    => 'Aantal',
+            'qty-ordered'            => 'Besteld aantal',
+            'qty-to-invoice'         => 'Aantal te factureren',
+            'view-title'             => 'Factuur #:invoice_id',
+            'bill-to'                => 'Bill to',
+            'ship-to'                => 'Verzenden naar',
+            'print'                  => 'Print',
+            'order-date'             => 'Besteldatum',
+            'invalid-qty'            => 'We found an invalid quantity to invoice items.',
+            'creation-error'         => 'De bestelling staat niet toe dat er een factuur wordt aangemaakt.',
+            'product-error'          => 'Zonder producten kan er geen factuur worden aangemaakt.',
+            'status-overdue'         => 'Verlopen',
+            'status-pending'         => 'Wachten op betaling',
+            'status-paid'            => 'Betaald',
         ],
 
         'shipments' => [
diff --git a/packages/Webkul/Admin/src/Resources/lang/pl/app.php b/packages/Webkul/Admin/src/Resources/lang/pl/app.php
index 7534c5220..a144cd4e7 100644
--- a/packages/Webkul/Admin/src/Resources/lang/pl/app.php
+++ b/packages/Webkul/Admin/src/Resources/lang/pl/app.php
@@ -400,32 +400,35 @@ return [
         ],
 
         'invoices' => [
-            'title'          => 'Faktury',
-            'id'             => 'Id',
-            'invoice-id'     => 'Identyfikator faktury',
-            'invoice'        => 'Faktura',
-            'date'           => 'Data faktury',
-            'order-id'       => 'Identyfikator zamówienia',
-            'customer-name'  => 'Nazwa klienta',
-            'status'         => 'Status',
-            'amount'         => 'Kwota',
-            'action'         => 'Akcja',
-            'add-title'      => 'Utwórz fakturę',
-            'save-btn-title' => 'Zapisz fakturę',
-            'qty'            => 'Ilość',
-            'qty-ordered'    => 'Zamówiona ilość',
-            'qty-to-invoice' => 'ilość do faktury',
-            'view-title'     => 'Faktura nr #:invoice_id',
-            'bill-to'        => 'Rachunek do',
-            'ship-to'        => 'Wysłano do',
-            'print'          => 'Drukuj',
-            'order-date'     => 'Data zamówienia',
-            'invalid-qty'    => 'We found an invalid quantity to invoice items.',
-            'creation-error' => 'Tworzenie faktury za zamówienie jest niedozwolone.',
-            'product-error'  => 'Faktury nie można utworzyć bez produktów.',
-            'status-overdue' => 'Overdue',
-            'status-pending' => 'Pending Payment',
-            'status-paid'    => 'Paid',
+            'title'                  => 'Faktury',
+            'id'                     => 'Id',
+            'invoice-id'             => 'Identyfikator faktury',
+            'invoice'                => 'Faktura',
+            'date'                   => 'Data faktury',
+            'order-id'               => 'Identyfikator zamówienia',
+            'customer-name'          => 'Nazwa klienta',
+            'status'                 => 'Status',
+            'amount'                 => 'Kwota',
+            'action'                 => 'Akcja',
+            'add-title'              => 'Utwórz fakturę',
+            'save-btn-title'         => 'Zapisz fakturę',
+            'send-duplicate-invoice' => 'Send Duplicate Invoice',
+            'send'                   => 'Send',
+            'invoice-sent'           => 'Invoice sent successfully!',
+            'qty'                    => 'Ilość',
+            'qty-ordered'            => 'Zamówiona ilość',
+            'qty-to-invoice'         => 'ilość do faktury',
+            'view-title'             => 'Faktura nr #:invoice_id',
+            'bill-to'                => 'Rachunek do',
+            'ship-to'                => 'Wysłano do',
+            'print'                  => 'Drukuj',
+            'order-date'             => 'Data zamówienia',
+            'invalid-qty'            => 'We found an invalid quantity to invoice items.',
+            'creation-error'         => 'Tworzenie faktury za zamówienie jest niedozwolone.',
+            'product-error'          => 'Faktury nie można utworzyć bez produktów.',
+            'status-overdue'         => 'Overdue',
+            'status-pending'         => 'Pending Payment',
+            'status-paid'            => 'Paid',
         ],
 
         'shipments' => [
diff --git a/packages/Webkul/Admin/src/Resources/lang/pt_BR/app.php b/packages/Webkul/Admin/src/Resources/lang/pt_BR/app.php
index cd4cbfb85..dc937db3e 100755
--- a/packages/Webkul/Admin/src/Resources/lang/pt_BR/app.php
+++ b/packages/Webkul/Admin/src/Resources/lang/pt_BR/app.php
@@ -399,32 +399,35 @@ return [
         ],
 
         'invoices' => [
-            'title'          => 'Faturas',
-            'id'             => 'Id',
-            'invoice-id'     => 'Fatura Id',
-            'invoice'        => 'Fatura',
-            'date'           => 'Data da Fatura',
-            'order-id'       => 'Pedido Id',
-            'customer-name'  => 'Nome do Cliente',
-            'status'         => 'Status',
-            'amount'         => 'Valor',
-            'action'         => 'Ação',
-            'add-title'      => 'Criar Fatura',
-            'save-btn-title' => 'Salvar Fatura',
-            'qty'            => 'Qtd',
-            'qty-ordered'    => 'Qtd Pedido',
-            'qty-to-invoice' => 'Qtd Faturado',
-            'view-title'     => 'Fatura #:invoice_id',
-            'bill-to'        => 'Cobrar de',
-            'ship-to'        => 'Enviar para',
-            'print'          => 'Imprimir',
-            'order-date'     => 'Data do Pedido',
-            'invalid-qty'    => 'We found an invalid quantity to invoice items.',
-            'creation-error' => 'A criação de fatura de pedido não é permitida.',
-            'product-error'  => 'A fatura não pode ser criada sem produtos.',
-            'status-overdue' => 'Overdue',
-            'status-pending' => 'Pagamento pendente',
-            'status-paid'    => 'Pago',
+            'title'                  => 'Faturas',
+            'id'                     => 'Id',
+            'invoice-id'             => 'Fatura Id',
+            'invoice'                => 'Fatura',
+            'date'                   => 'Data da Fatura',
+            'order-id'               => 'Pedido Id',
+            'customer-name'          => 'Nome do Cliente',
+            'status'                 => 'Status',
+            'amount'                 => 'Valor',
+            'action'                 => 'Ação',
+            'add-title'              => 'Criar Fatura',
+            'save-btn-title'         => 'Salvar Fatura',
+            'send-duplicate-invoice' => 'Send Duplicate Invoice',
+            'send'                   => 'Send',
+            'invoice-sent'           => 'Invoice sent successfully!',
+            'qty'                    => 'Qtd',
+            'qty-ordered'            => 'Qtd Pedido',
+            'qty-to-invoice'         => 'Qtd Faturado',
+            'view-title'             => 'Fatura #:invoice_id',
+            'bill-to'                => 'Cobrar de',
+            'ship-to'                => 'Enviar para',
+            'print'                  => 'Imprimir',
+            'order-date'             => 'Data do Pedido',
+            'invalid-qty'            => 'We found an invalid quantity to invoice items.',
+            'creation-error'         => 'A criação de fatura de pedido não é permitida.',
+            'product-error'          => 'A fatura não pode ser criada sem produtos.',
+            'status-overdue'         => 'Overdue',
+            'status-pending'         => 'Pagamento pendente',
+            'status-paid'            => 'Pago',
         ],
 
         'shipments' => [
diff --git a/packages/Webkul/Admin/src/Resources/lang/tr/app.php b/packages/Webkul/Admin/src/Resources/lang/tr/app.php
index 758a9d3e3..2ade34860 100644
--- a/packages/Webkul/Admin/src/Resources/lang/tr/app.php
+++ b/packages/Webkul/Admin/src/Resources/lang/tr/app.php
@@ -398,32 +398,35 @@ return [
         ],
 
         'invoices' => [
-            'title'          => 'Faturalar',
-            'id'             => 'ID',
-            'invoice-id'     => 'Fatura No',
-            'invoice'        => 'Fatura',
-            'date'           => 'Fatura Tarihi',
-            'order-id'       => 'Sipariş No',
-            'customer-name'  => 'Müşteri Adı',
-            'status'         => 'Durum',
-            'amount'         => 'Miktar',
-            'action'         => 'Eylem',
-            'add-title'      => 'Fatura Oluştur',
-            'save-btn-title' => 'Fatura Kaydet',
-            'qty'            => 'Miktar',
-            'qty-ordered'    => 'Sipariş Miktarı',
-            'qty-to-invoice' => 'Fatura Edilen Miktar',
-            'view-title'     => 'Fatura #:invoice_id',
-            'bill-to'        => 'Fatura Edilen',
-            'ship-to'        => 'Teslim Edilen',
-            'print'          => 'Yazdır',
-            'order-date'     => 'Sipariş Tarihi',
-            'invalid-qty'    => 'We found an invalid quantity to invoice items.',
-            'creation-error' => 'Fatura oluşturulmasına izin verilmedi.',
-            'product-error'  => 'Fatura oluşturulması için ürün ekleyiniz.',
-            'status-overdue' => 'Overdue',
-            'status-pending' => 'Pending Payment',
-            'status-paid'    => 'Paid',
+            'title'                  => 'Faturalar',
+            'id'                     => 'ID',
+            'invoice-id'             => 'Fatura No',
+            'invoice'                => 'Fatura',
+            'date'                   => 'Fatura Tarihi',
+            'order-id'               => 'Sipariş No',
+            'customer-name'          => 'Müşteri Adı',
+            'status'                 => 'Durum',
+            'amount'                 => 'Miktar',
+            'action'                 => 'Eylem',
+            'add-title'              => 'Fatura Oluştur',
+            'save-btn-title'         => 'Fatura Kaydet',
+            'send-duplicate-invoice' => 'Send Duplicate Invoice',
+            'send'                   => 'Send',
+            'invoice-sent'           => 'Invoice sent successfully!',
+            'qty'                    => 'Miktar',
+            'qty-ordered'            => 'Sipariş Miktarı',
+            'qty-to-invoice'         => 'Fatura Edilen Miktar',
+            'view-title'             => 'Fatura #:invoice_id',
+            'bill-to'                => 'Fatura Edilen',
+            'ship-to'                => 'Teslim Edilen',
+            'print'                  => 'Yazdır',
+            'order-date'             => 'Sipariş Tarihi',
+            'invalid-qty'            => 'We found an invalid quantity to invoice items.',
+            'creation-error'         => 'Fatura oluşturulmasına izin verilmedi.',
+            'product-error'          => 'Fatura oluşturulması için ürün ekleyiniz.',
+            'status-overdue'         => 'Overdue',
+            'status-pending'         => 'Pending Payment',
+            'status-paid'            => 'Paid',
         ],
 
         'shipments' => [
diff --git a/packages/Webkul/Admin/src/Resources/views/sales/invoices/view.blade.php b/packages/Webkul/Admin/src/Resources/views/sales/invoices/view.blade.php
index cfc54f8ef..bfbae6196 100755
--- a/packages/Webkul/Admin/src/Resources/views/sales/invoices/view.blade.php
+++ b/packages/Webkul/Admin/src/Resources/views/sales/invoices/view.blade.php
@@ -5,8 +5,9 @@
 @stop
 
 @section('content-wrapper')
-
-    <?php $order = $invoice->order; ?>
+    @php
+        $order = $invoice->order;
+    @endphp
 
     <div class="content full-page">
         <div class="page-header">
@@ -25,6 +26,13 @@
             <div class="page-action">
                 {!! view_render_event('sales.invoice.page_action.before', ['order' => $order]) !!}
 
+                <a
+                    href="javascript:void(0);"
+                    class="btn btn-lg btn-primary"
+                    @click="showModal('duplicateInvoiceFormModal')">
+                    {{ __('admin::app.sales.invoices.send-duplicate-invoice') }}
+                </a>
+
                 <a href="{{ route('admin.sales.invoices.print', $invoice->id) }}" class="btn btn-lg btn-primary">
                     {{ __('admin::app.sales.invoices.print') }}
                 </a>
@@ -35,7 +43,6 @@
 
         <div class="page-content">
             <tabs>
-
                 <tab name="{{ __('admin::app.sales.orders.info') }}" :selected="true">
                     <div class="sale-container">
                         <accordian :title="'{{ __('admin::app.sales.orders.order-and-account') }}'" :active="true">
@@ -128,50 +135,48 @@
                                             {!! view_render_event('sales.invoice.customer_email.after', ['order' => $order]) !!}
                                         </div>
                                     </div>
-                                </div>                                
-                            </div>
-                        </accordian>
-
-
-                    @if ($order->billing_address || $order->shipping_address)
-                        <accordian :title="'{{ __('admin::app.sales.orders.address') }}'" :active="true">
-                            <div slot="body">
-                                <div class="sale">
-                                    @if ($order->billing_address)
-                                        <div class="sale-section">
-                                            <div class="secton-title" >
-                                                <span>{{ __('admin::app.sales.orders.billing-address') }}</span>
-                                            </div>
-
-                                            <div class="section-content">
-                                                @include ('admin::sales.address', ['address' => $order->billing_address])
-
-                                                {!! view_render_event('sales.invoice.billing_address.after', ['order' => $order]) !!}
-                                            </div>
-                                        </div>
-                                    @endif
-
-                                    @if ($order->shipping_address)
-                                        <div class="sale-section">
-                                            <div class="secton-title">
-                                                <span>{{ __('admin::app.sales.orders.shipping-address') }}</span>
-                                            </div>
-
-                                            <div class="section-content">
-                                                @include ('admin::sales.address', ['address' => $order->shipping_address])
-
-                                                {!! view_render_event('sales.invoice.shipping_address.after', ['order' => $order]) !!}
-                                            </div>
-                                        </div>
-                                    @endif
                                 </div>
                             </div>
                         </accordian>
-                    @endif
+
+                        @if ($order->billing_address || $order->shipping_address)
+                            <accordian :title="'{{ __('admin::app.sales.orders.address') }}'" :active="true">
+                                <div slot="body">
+                                    <div class="sale">
+                                        @if ($order->billing_address)
+                                            <div class="sale-section">
+                                                <div class="secton-title" >
+                                                    <span>{{ __('admin::app.sales.orders.billing-address') }}</span>
+                                                </div>
+
+                                                <div class="section-content">
+                                                    @include ('admin::sales.address', ['address' => $order->billing_address])
+
+                                                    {!! view_render_event('sales.invoice.billing_address.after', ['order' => $order]) !!}
+                                                </div>
+                                            </div>
+                                        @endif
+
+                                        @if ($order->shipping_address)
+                                            <div class="sale-section">
+                                                <div class="secton-title">
+                                                    <span>{{ __('admin::app.sales.orders.shipping-address') }}</span>
+                                                </div>
+
+                                                <div class="section-content">
+                                                    @include ('admin::sales.address', ['address' => $order->shipping_address])
+
+                                                    {!! view_render_event('sales.invoice.shipping_address.after', ['order' => $order]) !!}
+                                                </div>
+                                            </div>
+                                        @endif
+                                    </div>
+                                </div>
+                            </accordian>
+                        @endif
 
                         <accordian :title="'{{ __('admin::app.sales.orders.products-ordered') }}'" :active="true">
                             <div slot="body">
-
                                 <div class="table">
                                     <div class="table-responsive">
                                         <table>
@@ -191,7 +196,6 @@
                                             </thead>
 
                                             <tbody>
-
                                                 @foreach ($invoice->items as $item)
                                                     <tr>
                                                         <td>{{ $item->getTypeInstance()->getOrderedItem($item)->sku }}</td>
@@ -225,10 +229,9 @@
                                                         <td>{{ core()->formatBasePrice($item->base_total + $item->base_tax_amount - $item->base_discount_amount) }}</td>
                                                     </tr>
                                                 @endforeach
-
                                             </tbody>
                                         </table>
-                                    </div>                                    
+                                    </div>
                                 </div>
 
                                 <table class="sale-summary">
@@ -264,13 +267,12 @@
                                         <td>{{ core()->formatBasePrice($invoice->base_grand_total) }}</td>
                                     </tr>
                                 </table>
-
                             </div>
                         </accordian>
                     </div>
                 </tab>
 
-                <tab name="Transactions" :selected="false">
+                <tab name="{{ __('admin::app.sales.transactions.title') }}" :selected="false">
                     <div class="sale-container">
                         @inject('InvoicesTransactionsDatagrid', 'Webkul\Admin\DataGrids\InvoicesTransactionsDatagrid')
                         {!! $InvoicesTransactionsDatagrid->render() !!}
@@ -278,6 +280,41 @@
                 </tab>
             </tabs>
         </div>
-
     </div>
-@stop
\ No newline at end of file
+
+    <modal id="duplicateInvoiceFormModal" :is-open="modalIds.duplicateInvoiceFormModal">
+        <h3 slot="header">{{ __('admin::app.sales.invoices.send-duplicate-invoice') }}</h3>
+
+        <div slot="body">
+            <form
+                method="POST"
+                action="{{ route('admin.sales.invoices.send-duplicate-invoice', $invoice->id) }}"
+                @submit.prevent="onSubmit">
+                @csrf()
+
+                <div class="control-group" :class="[errors.has('email') ? 'has-error' : '']">
+                    <label for="email" class="required">{{ __('admin::app.admin.emails.email') }}</label>
+
+                    <input
+                        class="control"
+                        id="email"
+                        v-validate="'required|email'"
+                        type="email"
+                        name="email"
+                        data-vv-as="&quot;{{ __('admin::app.admin.emails.email') }}&quot;"
+                        value="{{ $invoice->order->customer_email }}">
+
+                    <span
+                        class="control-error"
+                        v-text="errors.first('email')"
+                        v-if="errors.has('email')">
+                    </span>
+                </div>
+
+                <button type="submit" class="btn btn-lg btn-primary float-right">
+                    {{ __('admin::app.sales.invoices.send') }}
+                </button>
+            </form>
+        </div>
+    </modal>
+@stop
diff --git a/packages/Webkul/Admin/src/Routes/sales-routes.php b/packages/Webkul/Admin/src/Routes/sales-routes.php
index 997ea69b7..2e17b868c 100644
--- a/packages/Webkul/Admin/src/Routes/sales-routes.php
+++ b/packages/Webkul/Admin/src/Routes/sales-routes.php
@@ -48,6 +48,9 @@ Route::group(['middleware' => ['web', 'admin', 'admin_locale'], 'prefix' => conf
             'view' => 'admin::sales.invoices.view',
         ])->name('admin.sales.invoices.view');
 
+        Route::post('/invoices/send-duplicate/{id}', [InvoiceController::class, 'sendDuplicateInvoice'])
+            ->name('admin.sales.invoices.send-duplicate-invoice');
+
         Route::get('/invoices/print/{id}', [InvoiceController::class, 'printInvoice'])->defaults('_config', [
             'view' => 'admin::sales.invoices.print',
         ])->name('admin.sales.invoices.print');
diff --git a/packages/Webkul/Admin/src/Traits/Mails.php b/packages/Webkul/Admin/src/Traits/Mails.php
index 10b56a8a6..061136463 100644
--- a/packages/Webkul/Admin/src/Traits/Mails.php
+++ b/packages/Webkul/Admin/src/Traits/Mails.php
@@ -3,15 +3,16 @@
 namespace Webkul\Admin\Traits;
 
 use Illuminate\Support\Facades\Mail;
+use Webkul\Admin\Mail\CancelOrderAdminNotification;
+use Webkul\Admin\Mail\CancelOrderNotification;
+use Webkul\Admin\Mail\DuplicateInvoiceNotification;
 use Webkul\Admin\Mail\NewAdminNotification;
+use Webkul\Admin\Mail\NewInventorySourceNotification;
+use Webkul\Admin\Mail\NewInvoiceNotification;
 use Webkul\Admin\Mail\NewOrderNotification;
 use Webkul\Admin\Mail\NewRefundNotification;
-use Webkul\Admin\Mail\NewInvoiceNotification;
-use Webkul\Admin\Mail\CancelOrderNotification;
 use Webkul\Admin\Mail\NewShipmentNotification;
 use Webkul\Admin\Mail\OrderCommentNotification;
-use Webkul\Admin\Mail\CancelOrderAdminNotification;
-use Webkul\Admin\Mail\NewInventorySourceNotification;
 
 trait Mails
 {
@@ -26,14 +27,20 @@ trait Mails
         $customerLocale = $this->getLocale($order);
 
         try {
-            /* email to customer */
+            /**
+             * Email to customer.
+             */
             $configKey = 'emails.general.notifications.emails.general.notifications.new-order';
+
             if (core()->getConfigData($configKey)) {
                 $this->prepareMail($customerLocale, new NewOrderNotification($order));
             }
 
-            /* email to admin */
+            /**
+             * Email to admin.
+             */
             $configKey = 'emails.general.notifications.emails.general.notifications.new-admin';
+
             if (core()->getConfigData($configKey)) {
                 $this->prepareMail(config('app.locale'), new NewAdminNotification($order));
             }
@@ -57,8 +64,11 @@ trait Mails
                 return;
             }
 
-            /* email to customer */
+            /**
+             * Email to customer.
+             */
             $configKey = 'emails.general.notifications.emails.general.notifications.new-invoice';
+
             if (core()->getConfigData($configKey)) {
                 $this->prepareMail($customerLocale, new NewInvoiceNotification($invoice));
             }
@@ -67,6 +77,31 @@ trait Mails
         }
     }
 
+    /**
+     * Send duplicate invoice mail to the customer.
+     *
+     * @param  \Webkul\Sales\Contracts\Invoice  $invoice
+     * @param  string  $customerEmail
+     * @return void
+     */
+    public function sendDuplicateInvoiceMail($invoice, $customerEmail)
+    {
+        $customerLocale = $this->getLocale($invoice);
+
+        try {
+            /**
+             * Email to customer.
+             */
+            $configKey = 'emails.general.notifications.emails.general.notifications.new-invoice';
+
+            if (core()->getConfigData($configKey)) {
+                $this->prepareMail($customerLocale, new DuplicateInvoiceNotification($invoice, $customerEmail));
+            }
+        } catch (\Exception $e) {
+            report($e);
+        }
+    }
+
     /**
      * Send new refund mail to the customer.
      *
@@ -78,8 +113,11 @@ trait Mails
         $customerLocale = $this->getLocale($refund);
 
         try {
-            /* email to customer */
+            /**
+             * Email to customer.
+             */
             $configKey = 'emails.general.notifications.emails.general.notifications.new-refund';
+
             if (core()->getConfigData($configKey)) {
                 $this->prepareMail($customerLocale, new NewRefundNotification($refund));
             }
@@ -103,14 +141,20 @@ trait Mails
                 return;
             }
 
-            /* email to customer */
+            /**
+             * Email to customer.
+             */
             $configKey = 'emails.general.notifications.emails.general.notifications.new-shipment';
+
             if (core()->getConfigData($configKey)) {
                 $this->prepareMail($customerLocale, new NewShipmentNotification($shipment));
             }
 
-            /* email to admin */
+            /**
+             * Email to admin.
+             */
             $configKey = 'emails.general.notifications.emails.general.notifications.new-inventory-source';
+
             if (core()->getConfigData($configKey)) {
                 $this->prepareMail(config('app.locale'), new NewInventorySourceNotification($shipment));
             }
@@ -130,14 +174,20 @@ trait Mails
         $customerLocale = $this->getLocale($order);
 
         try {
-            /* email to customer */
+            /**
+             * Email to customer.
+             */
             $configKey = 'emails.general.notifications.emails.general.notifications.cancel-order';
+
             if (core()->getConfigData($configKey)) {
                 $this->prepareMail($customerLocale, new CancelOrderNotification($order));
             }
 
-            /* email to admin */
+            /**
+             * Email to admin.
+             */
             $configKey = 'emails.general.notifications.emails.general.notifications.new-admin';
+
             if (core()->getConfigData($configKey)) {
                 $this->prepareMail(config('app.locale'), new CancelOrderAdminNotification($order));
             }
@@ -161,7 +211,9 @@ trait Mails
         }
 
         try {
-            /* email to customer */
+            /**
+             * Email to customer.
+             */
             $this->prepareMail($customerLocale, new OrderCommentNotification($comment));
         } catch (\Exception $e) {
             report($e);
@@ -181,6 +233,7 @@ trait Mails
         }
 
         $objectFirstItem = $object->items->first();
+
         return isset($objectFirstItem->additional['locale']) ? $objectFirstItem->additional['locale'] : 'en';
     }
 
@@ -192,6 +245,7 @@ trait Mails
     private function prepareMail($locale, $notification)
     {
         app()->setLocale($locale);
+
         Mail::queue($notification);
     }
-}
\ No newline at end of file
+}