diff --git a/app/Http/Controllers/Oasis/InvoiceController.php b/app/Http/Controllers/Oasis/InvoiceController.php
index e92c5872..b8fe219e 100644
--- a/app/Http/Controllers/Oasis/InvoiceController.php
+++ b/app/Http/Controllers/Oasis/InvoiceController.php
@@ -1,6 +1,8 @@
 <?php
+
 namespace App\Http\Controllers\Oasis;
 
+use App\Http\Requests\Oasis\ShareInvoiceRequest;
 use App\Http\Resources\Oasis\OasisInvoiceResource;
 use Auth;
 use Illuminate\Http\Request;
@@ -61,7 +63,7 @@ class InvoiceController extends Controller
      */
     public function download_invoice(Invoice $invoice)
     {
-        if (! Storage::exists(invoice_path($invoice))) {
+        if (!Storage::exists(invoice_path($invoice))) {
             abort(404, 'Not Found');
         }
 
@@ -98,33 +100,33 @@ class InvoiceController extends Controller
         $user = $request->user();
 
         $invoice = Invoice::create([
-            'user_id' => $user->id,
-            'client_id' => $client->id ?? null,
-            'invoice_type' => $request->invoice_type,
-            'invoice_number' => $request->invoice_number,
+            'user_id'         => $user->id,
+            'client_id'       => $client->id ?? null,
+            'invoice_type'    => $request->invoice_type,
+            'invoice_number'  => $request->invoice_number,
             'variable_number' => $request->variable_number,
-            'delivery_at' => $request->delivery_at,
-            'discount_type' => $request->discount_type ?? null,
-            'discount_rate' => $request->discount_rate ?? null,
-            'items' => json_decode($request->items),
-            'user' => $user->invoiceProfile,
-            'client' => [
-                'email' => $client->email ?? $request->client_email,
-                'name' => $client->name ?? $request->client_name,
-                'address' => $client->address ?? $request->client_address,
-                'city' => $client->city ?? $request->client_city,
+            'delivery_at'     => $request->delivery_at,
+            'discount_type'   => $request->discount_type ?? null,
+            'discount_rate'   => $request->discount_rate ?? null,
+            'items'           => json_decode($request->items),
+            'user'            => $user->invoiceProfile,
+            'client'          => [
+                'email'       => $client->email ?? $request->client_email,
+                'name'        => $client->name ?? $request->client_name,
+                'address'     => $client->address ?? $request->client_address,
+                'city'        => $client->city ?? $request->client_city,
                 'postal_code' => $client->postal_code ?? $request->client_postal_code,
-                'country' => $client->country ?? $request->client_country,
-                'ico' => $client->ico ?? $request->client_ico,
-                'dic' => $client->dic ?? $request->client_dic ?? null,
-                'ic_dph' => $client->ic_dph ?? $request->client_ic_dph ?? null,
+                'country'     => $client->country ?? $request->client_country,
+                'ico'         => $client->ico ?? $request->client_ico,
+                'dic'         => $client->dic ?? $request->client_dic ?? null,
+                'ic_dph'      => $client->ic_dph ?? $request->client_ic_dph ?? null,
             ],
         ]);
 
         // Generate PDF
         \PDF::loadView('oasis.invoices.invoice', [
             'invoice' => Invoice::find($invoice->id),
-            'user' => $user,
+            'user'    => $user,
         ])
             ->setPaper('a4')
             ->setOrientation('portrait')
@@ -156,12 +158,12 @@ class InvoiceController extends Controller
         $user = $request->user();
 
         $invoice->update([
-            'invoice_number' => $request->invoice_number,
+            'invoice_number'  => $request->invoice_number,
             'variable_number' => $request->variable_number,
-            'delivery_at' => $request->delivery_at,
-            'discount_type' => $request->discount_type ?? null,
-            'discount_rate' => $request->discount_rate ?? null,
-            'items' => json_decode($request->items),
+            'delivery_at'     => $request->delivery_at,
+            'discount_type'   => $request->discount_type ?? null,
+            'discount_rate'   => $request->discount_rate ?? null,
+            'items'           => json_decode($request->items),
         ]);
 
         Storage::delete(invoice_path($invoice));
@@ -169,7 +171,7 @@ class InvoiceController extends Controller
         // Generate PDF
         \PDF::loadView('oasis.invoices.invoice', [
             'invoice' => Invoice::find($invoice->id),
-            'user' => $user,
+            'user'    => $user,
         ])
             ->setPaper('a4')
             ->setOrientation('portrait')
@@ -189,6 +191,25 @@ class InvoiceController extends Controller
         );
     }
 
+    /**
+     * Share invoice via email
+     *
+     * @param ShareInvoiceRequest $request
+     * @param Invoice $invoice
+     */
+    public function share(ShareInvoiceRequest $request, Invoice $invoice)
+    {
+        Notification::route('mail', $request->email)
+            ->notify(
+                new InvoiceDeliveryNotification($request->user(), $invoice)
+            );
+
+        return response(
+            'Done.',
+            204
+        );
+    }
+
     /**
      * @param Invoice $invoice
      * @throws \Exception
@@ -210,18 +231,18 @@ class InvoiceController extends Controller
         $user = Auth::user();
 
         return [
-            'clients' => $user->clients->map(function ($client) {
+            'clients'                  => $user->clients->map(function ($client) {
                 return [
                     'label' => $client->name,
                     'value' => $client->id,
                 ];
             }),
-            'isVatPayer' => $user->invoiceProfile->ic_dph ?? false,
-            'latestInvoiceNumber' => $user->regularInvoices->first()
-                ? (int) $user->regularInvoices->first()->invoice_number
+            'isVatPayer'               => $user->invoiceProfile->ic_dph ?? false,
+            'latestInvoiceNumber'      => $user->regularInvoices->first()
+                ? (int)$user->regularInvoices->first()->invoice_number
                 : null,
             'recommendedInvoiceNumber' => $user->regularInvoices->first()
-                ? (int) $user->regularInvoices->first()->invoice_number + 1
+                ? (int)$user->regularInvoices->first()->invoice_number + 1
                 : Carbon::now()->format('Y') . '0001',
         ];
     }
@@ -232,21 +253,21 @@ class InvoiceController extends Controller
      */
     private function getOrStoreClient(StoreInvoiceRequest $request)
     {
-        if (! Str::isUuid($request->client) && $request->store_client) {
+        if (!Str::isUuid($request->client) && $request->store_client) {
             return $request->user()
                 ->clients()
                 ->create([
-                    'avatar' => store_avatar($request, 'client_avatar') ?? null,
-                    'name' => $request->client_name,
-                    'email' => $request->client_email ?? null,
+                    'avatar'       => store_avatar($request, 'client_avatar') ?? null,
+                    'name'         => $request->client_name,
+                    'email'        => $request->client_email ?? null,
                     'phone_number' => $request->client_phone_number ?? null,
-                    'address' => $request->client_address,
-                    'city' => $request->client_city,
-                    'postal_code' => $request->client_postal_code,
-                    'country' => $request->client_country,
-                    'ico' => $request->client_ico ?? null,
-                    'dic' => $request->client_dic ?? null,
-                    'ic_dph' => $request->client_ic_dph ?? null,
+                    'address'      => $request->client_address,
+                    'city'         => $request->client_city,
+                    'postal_code'  => $request->client_postal_code,
+                    'country'      => $request->client_country,
+                    'ico'          => $request->client_ico ?? null,
+                    'dic'          => $request->client_dic ?? null,
+                    'ic_dph'       => $request->client_ic_dph ?? null,
                 ]);
         }
 
diff --git a/app/Http/Requests/Oasis/ShareInvoiceRequest.php b/app/Http/Requests/Oasis/ShareInvoiceRequest.php
new file mode 100644
index 00000000..cd55e165
--- /dev/null
+++ b/app/Http/Requests/Oasis/ShareInvoiceRequest.php
@@ -0,0 +1,30 @@
+<?php
+
+namespace App\Http\Requests\Oasis;
+
+use Illuminate\Foundation\Http\FormRequest;
+
+class ShareInvoiceRequest extends FormRequest
+{
+    /**
+     * Determine if the user is authorized to make this request.
+     *
+     * @return bool
+     */
+    public function authorize()
+    {
+        return true;
+    }
+
+    /**
+     * Get the validation rules that apply to the request.
+     *
+     * @return array
+     */
+    public function rules()
+    {
+        return [
+            'email' => 'required|email',
+        ];
+    }
+}
diff --git a/routes/oasis.php b/routes/oasis.php
index 6fb166d8..8309b15e 100644
--- a/routes/oasis.php
+++ b/routes/oasis.php
@@ -37,6 +37,7 @@ Route::group(['middleware' => 'api', 'prefix' => '/api/oasis'], function () {
         Route::get('/{invoice}', [InvoiceController::class, 'get_single_invoice']);
         Route::delete('/{invoice}', [InvoiceController::class, 'destroy']);
         Route::post('/{invoice}', [InvoiceController::class, 'update']);
+        Route::post('/{invoice}/share', [InvoiceController::class, 'share']);
         Route::post('/', [InvoiceController::class, 'store']);
     });
 
diff --git a/tests/Feature/Oasis/OasisInvoiceTest.php b/tests/Feature/Oasis/OasisInvoiceTest.php
index 67eac8d6..3f2f40cc 100644
--- a/tests/Feature/Oasis/OasisInvoiceTest.php
+++ b/tests/Feature/Oasis/OasisInvoiceTest.php
@@ -770,4 +770,33 @@ class OasisInvoiceTest extends TestCase
                 'recommendedInvoiceNumber' => 20210002,
             ]);
     }
+
+    /**
+     * @test
+     */
+    public function it_send_single_invoice_on_email()
+    {
+        Notification::fake();
+
+        $user = User::factory(User::class)
+            ->create(['role' => 'user']);
+
+        $profile = InvoiceProfile::factory(InvoiceProfile::class)
+            ->create(['user_id' => $user->id]);
+
+        Sanctum::actingAs($user);
+
+        $invoice = Invoice::factory(Invoice::class)
+            ->create([
+                'user_id'      => $user->id,
+                'invoice_type' => 'regular-invoice',
+                'user'         => $profile->toArray(),
+            ]);
+
+        $this->postJson("/api/oasis/invoices/$invoice->id/share", [
+            'email' => 'john@doe.com',
+        ])->assertStatus(204);
+
+        Notification::assertTimesSent(1, InvoiceDeliveryNotification::class);
+    }
 }