After successful payment, informing the user by e-mail is added.

app/Http/Controllers/DonationController.php

@@ -8,6 +8,7 @@ use Illuminate\Http\Request;
 use Illuminate\Support\Facades\Hash;
 use Illuminate\Support\Str;
 use App\Mail\UserCreated;
+use App\Mail\SuccessfulPayment;
 use Illuminate\Support\Facades\Mail;
 
 class DonationController extends Controller
@@ -167,7 +168,7 @@ class DonationController extends Controller
         }
 
         $donation->save();
-
+		Mail::to($donation)->send(new SuccessfulPayment($donation));
         return redirect()->route('donation.success', $donation->conversation_id);
 
     }

app/Mail/SuccessfulPayment.php

@@ -0,0 +1,34 @@
+<?php
+
+namespace App\Mail;
+
+use Illuminate\Bus\Queueable;
+use Illuminate\Contracts\Queue\ShouldQueue;
+use Illuminate\Mail\Mailable;
+use Illuminate\Queue\SerializesModels;
+use App\Donation;
+
+class SuccessfulPayment extends Mailable
+{
+    use Queueable, SerializesModels;
+	public $donation;
+    /**
+     * Create a new message instance.
+     *
+     * @return void
+     */
+    public function __construct(Donation $donation)
+    {
+        $this->donation = $donation;
+    }
+
+    /**
+     * Build the message.
+     *
+     * @return $this
+     */
+    public function build()
+    {
+        return $this->subject("Thank you for your donation!")->markdown('emails.successfulpayment');
+    }
+}

resources/views/emails/successfulpayment.blade.php

@@ -0,0 +1,15 @@
+@component('mail::message')
+# Thank you for your donation!
+
+We received your {{$donation->amount}} {{$donation->currency}} USD donation.
+
+Name: {{$donation->first_name}} {{$donation->last_name}}
+
+Amount: {{$donation->amount}} {{$donation->currency}}
+
+Transaction Date: {{$donation->created_at}}
+
+Next Payment Date: {{$donation->next_payment_at}}
+
+
+@endcomponent