diff --git a/app/Http/Controllers/Incomes/Invoices.php b/app/Http/Controllers/Incomes/Invoices.php
index 2a7698fcc..6d4e6258f 100644
--- a/app/Http/Controllers/Incomes/Invoices.php
+++ b/app/Http/Controllers/Incomes/Invoices.php
@@ -20,11 +20,13 @@ use App\Models\Item\Item;
 use App\Models\Setting\Category;
 use App\Models\Setting\Currency;
 use App\Models\Setting\Tax;
+use App\Notifications\Income\Invoice as Notification;
 use App\Traits\Currencies;
 use App\Traits\DateTime;
 use App\Traits\Uploads;
 use App\Utilities\Modules;
 use Date;
+use File;
 
 class Invoices extends Controller
 {
@@ -407,6 +409,48 @@ class Invoices extends Controller
         return redirect()->back();
     }
 
+    /**
+     * Download the PDF file of invoice.
+     *
+     * @param  Invoice $invoice
+     *
+     * @return Response
+     */
+    public function emailInvoice(Invoice $invoice)
+    {
+        $invoice = $this->prepareInvoice($invoice);
+
+        $html = view($invoice->template_path, compact('invoice'))->render();
+
+        $pdf = \App::make('dompdf.wrapper');
+        $pdf->loadHTML($html);
+
+        $file = storage_path('app/temp/invoice_'.time().'.pdf');
+
+        $invoice->pdf_path = $file;
+
+        // Save the PDF file into temp folder
+        $pdf->save($file);
+
+        // Notify the customer
+        $invoice->customer->notify(new Notification($invoice));
+
+        // Delete temp file
+        File::delete($file);
+
+        unset($invoice->paid);
+        unset($invoice->template_path);
+        unset($invoice->pdf_path);
+
+        // Mark invoice as sent
+        $invoice->invoice_status_code = 'sent';
+        $invoice->save();
+
+        flash(trans('invoices.messages.email_sent'))->success();
+
+        return redirect()->back();
+    }
+
     /**
      * Print the invoice.
      *
@@ -416,19 +460,7 @@ class Invoices extends Controller
      */
     public function printInvoice(Invoice $invoice)
     {
-        $paid = 0;
-
-        foreach ($invoice->payments as $item) {
-            $item->default_currency_code = $invoice->currency_code;
-
-            $paid += $item->getDynamicConvertedAmount();
-        }
-
-        $invoice->paid = $paid;
-
-        $invoice->template_path = 'incomes.invoices.invoice';
-
-        event(new InvoicePrinting($invoice));
+        $invoice = $this->prepareInvoice($invoice);
 
         return view($invoice->template_path, compact('invoice'));
     }
@@ -442,25 +474,15 @@ class Invoices extends Controller
      */
     public function pdfInvoice(Invoice $invoice)
     {
-        $paid = 0;
-
-        foreach ($invoice->payments as $item) {
-            $item->default_currency_code = $invoice->currency_code;
-
-            $paid += $item->getDynamicConvertedAmount();
-        }
-
-        $invoice->paid = $paid;
-
-        $invoice->template_path = 'incomes.invoices.invoice';
-
-        event(new InvoicePrinting($invoice));
+        $invoice = $this->prepareInvoice($invoice);
 
         $html = view($invoice->template_path, compact('invoice'))->render();
 
         $pdf = \App::make('dompdf.wrapper');
         $pdf->loadHTML($html);
 
+        //$pdf->setPaper('A4', 'portrait');
+
         $file_name = 'invoice_'.time().'.pdf';
 
         return $pdf->download($file_name);
@@ -591,6 +613,25 @@ class Invoices extends Controller
         return redirect('incomes/invoices');
     }
 
+    protected function prepareInvoice(Invoice $invoice)
+    {
+        $paid = 0;
+
+        foreach ($invoice->payments as $item) {
+            $item->default_currency_code = $invoice->currency_code;
+
+            $paid += $item->getDynamicConvertedAmount();
+        }
+
+        $invoice->paid = $paid;
+
+        $invoice->template_path = 'incomes.invoices.invoice';
+
+        event(new InvoicePrinting($invoice));
+
+        return $invoice;
+    }
+
     protected function addTotals($invoice, $request, $taxes, $sub_total, $tax_total)
     {
         $sort_order = 1;
diff --git a/app/Notifications/Income/Invoice.php b/app/Notifications/Income/Invoice.php
index 2ca68b092..354786e9a 100644
--- a/app/Notifications/Income/Invoice.php
+++ b/app/Notifications/Income/Invoice.php
@@ -46,9 +46,18 @@ class Invoice extends Notification implements ShouldQueue
      */
     public function toMail($notifiable)
     {
-        return (new MailMessage)
-            ->line('You are receiving this email because you have an upcoming ' . money($this->invoice->amount, $this->invoice->currency_code, true) . ' invoice to ' . $this->invoice->customer->name . ' customer.')
-            ->action('Pay Now', url('customers/invoices', $this->invoice->id, true));
+        $message = (new MailMessage)
+            ->line(trans('invoices.notification.message', ['amount' => money($this->invoice->amount, $this->invoice->currency_code, true), 'customer' => $this->invoice->customer->name]))
+            ->action(trans('invoices.notification.button'), url('customers/invoices', $this->invoice->id, true));
+
+        // Attach the PDF file if available
+        if (isset($this->invoice->pdf_path)) {
+            $message->attach($this->invoice->pdf_path, [
+                'mime' => 'application/pdf',
+            ]);
+        }
+
+        return $message;
     }
 
     /**
diff --git a/resources/lang/en-GB/invoices.php b/resources/lang/en-GB/invoices.php
index b1f0f7a55..7f52a170f 100644
--- a/resources/lang/en-GB/invoices.php
+++ b/resources/lang/en-GB/invoices.php
@@ -37,7 +37,13 @@ return [
     ],
 
     'messages' => [
+        'email_sent'    => 'Invoice email has been sent successfully!',
         'marked_sent'   => 'Invoice marked as sent successfully!',
     ],
 
+    'notification' => [
+        'message'       => 'You are receiving this email because you have an upcoming :amount invoice to :customer customer.',
+        'button'        => 'Pay Now',
+    ],
+
 ];
diff --git a/resources/views/incomes/invoices/show.blade.php b/resources/views/incomes/invoices/show.blade.php
index 8a07b1325..7d88541a0 100644
--- a/resources/views/incomes/invoices/show.blade.php
+++ b/resources/views/incomes/invoices/show.blade.php
@@ -161,7 +161,7 @@
                             @permission('update-incomes-invoices')
                             <li><a href="{{ url('incomes/invoices/' . $invoice->id . '/sent') }}">{{ trans('invoices.mark_sent') }}</a></li>
                             @endpermission
-                            <li><a href="#" id="button-email">{{ trans('invoices.send_mail') }}</a></li>
+                            <li><a href="{{ url('incomes/invoices/' . $invoice->id . '/email') }}">{{ trans('invoices.send_mail') }}</a></li>
                             <li class="divider"></li>
                             <li><a href="{{ url('incomes/invoices/' . $invoice->id . '/pdf') }}">{{ trans('invoices.download_pdf') }}</a></li>
                             <li class="divider"></li>