How to use Postmark SwiftMailer inside Laravel

readme.md

1. Install the Postmark Swiftmailer

   composer require wildbit/swiftmailer-postmark
   

2. Add the following variables to your .env file.

   MAIL_DRIVER=postmark
   POSTMARK_KEY=<key>
   

3. Add the following line to config/services.php

   'postmark' => [
       'key' => env('POSTMARK_KEY')
   ],
   

4. Replace Laravel's MailServiceProvider inside config/app.php with the provided PostmarkServiceProvider.php.

   // Illuminate\Mail\MailServiceProvider::class,
   App\Providers\PostmarkServiceProvider::class,
   

PostmarkServiceProvider.php

<?php

namespace App\Providers;

use Postmark\Transport;
use Illuminate\Mail\MailServiceProvider;

class PostmarkServiceProvider extends MailServiceProvider
{
    /**
     * Extended register the Swift Transport instance.
     *
     * @return void
     */
    protected function registerSwiftTransport()
    {
        parent::registerSwiftTransport();

        $this->app['swift.transport']->extend('postmark', function($app) {
            return new Transport(
                config('services.postmark.key')
            );
        });
    }
}