diff --git a/tests/Feature/EstimateTest.php b/tests/Feature/EstimateTest.php
index 5d337121..ebd6b80a 100644
--- a/tests/Feature/EstimateTest.php
+++ b/tests/Feature/EstimateTest.php
@@ -11,6 +11,8 @@ use Crater\Http\Controllers\V1\Estimate\EstimatesController;
 use Crater\Http\Controllers\V1\Estimate\SendEstimateController;
 use Crater\Http\Requests\DeleteEstimatesRequest;
 use Crater\Http\Requests\SendEstimatesRequest;
+use Crater\Mail\SendEstimateMail;
+
 use function Pest\Laravel\{postJson, putJson, getJson};
 
 beforeEach(function () {
@@ -150,6 +152,8 @@ test('send estimate using a form request', function () {
 });
 
 test('send estimate to customer', function () {
+    Mail::fake();
+
     $estimate = Estimate::factory()->create([
         'estimate_date' => '1988-07-18',
         'expiry_date' => '1988-08-18',
@@ -167,6 +171,8 @@ test('send estimate to customer', function () {
         ->assertJson([
             'success' => true
         ]);
+
+    Mail::assertSent(SendEstimateMail::class);
 });
 
 test('estimate mark as accepted', function () {
diff --git a/tests/Feature/InvoiceTest.php b/tests/Feature/InvoiceTest.php
index 84c8a035..82a9cf13 100644
--- a/tests/Feature/InvoiceTest.php
+++ b/tests/Feature/InvoiceTest.php
@@ -8,6 +8,7 @@ use Illuminate\Support\Facades\Artisan;
 use Laravel\Sanctum\Sanctum;
 use Crater\Http\Requests\InvoicesRequest;
 use Crater\Http\Controllers\V1\Invoice\InvoicesController;
+use Crater\Mail\SendInvoiceMail;
 
 use function Pest\Laravel\{postJson, putJson, getJson};
 
@@ -129,6 +130,8 @@ test('update validates using a form request', function () {
 });
 
 test('send invoice to customer', function () {
+    Mail::fake();
+
     $invoices = Invoice::factory()->create([
         'invoice_date' => '1988-07-18',
         'due_date' => '1988-08-18',
@@ -150,7 +153,9 @@ test('send invoice to customer', function () {
         ]);
 
     $invoice2 = Invoice::find($invoices->id);
+
     $this->assertEquals($invoice2->status, Invoice::STATUS_SENT);
+    Mail::assertSent(SendInvoiceMail::class);
 });
 
 test('invoice mark as paid', function () {
diff --git a/tests/Feature/PaymentTest.php b/tests/Feature/PaymentTest.php
index b246837e..839c9c1a 100644
--- a/tests/Feature/PaymentTest.php
+++ b/tests/Feature/PaymentTest.php
@@ -7,6 +7,8 @@ use Illuminate\Support\Facades\Artisan;
 use Laravel\Sanctum\Sanctum;
 use Crater\Http\Requests\PaymentRequest;
 use Crater\Http\Controllers\V1\Payment\PaymentsController;
+use Crater\Mail\SendPaymentMail;
+
 use function Pest\Laravel\{postJson, putJson, getJson, deleteJson};
 
 beforeEach(function () {
@@ -113,6 +115,9 @@ test('search payments', function () {
 });
 
 test('send payment to customer', function () {
+
+    Mail::fake();
+
     $payment = Payment::factory()->create();
 
     $data = [
@@ -122,11 +127,13 @@ test('send payment to customer', function () {
         'to' => 'doe@example.com'
     ];
 
-    $response = postJson("api/v1/payments/{$payment->id}/send", $data) ;
+    $response = postJson("api/v1/payments/{$payment->id}/send", $data);
 
     $response->assertJson([
         'success' => true
     ]);
+
+    Mail::assertSent(SendPaymentMail::class);
 });
 
 test('delete payment', function () {