How-To.txt

1. Copy MandrillServiceProvider in app/Providers/ directory.
2. Copy Mandrill in app/Facades/ directory

3. add MandrillServiceProvider in providers array

'providers' => [
  \App\Providers\MandrillServiceProvider::class,
]


add Mandrill in facades array

'facades' => [
  'Mandrill' => App\Facades\Mandrill::class,
]

Update mandrill config in services.php

'mandrill' => [
  'secret' => 'aquickbrownfoxjumpsoverthelazydog',
],

Now you've two mail clients, Mailer and Mandrill, we can use any of the two.
e.g.
using Facades

\Illuminate\Support\Facades\Mail::send('mail', [], function ($mail) {
    $mail->to('[email protected]');
});

\App\Facades\Mandrill::send('mail', [], function ($mail) {
    $mail->to('[email protected]');
});


using app

app()->make('mailer')->send('mail',[], function ($mail) {
    $mail->to('[email protected]');
});

app()->make('mandrill')->send('mail',[], function ($mail) {
    $mail->to('[email protected]');
});

Thanks.

[email protected]

Mandrill.php

<?php

namespace App\Facades;

use Illuminate\Support\Facades\Facade;

class Mandrill extends Facade
{
    /**
     * Get the registered name of the component.
     *
     * @return string
     */
    protected static function getFacadeAccessor()
    {
        return 'mandrill';
    }
}

MandrillServiceProvider.php

<?php

namespace App\Providers;

use Illuminate\Mail\Mailer;
use Illuminate\Mail\TransportManager;
use Illuminate\Support\Arr;
use Illuminate\Support\ServiceProvider;
use Illuminate\Support\Str;
use Swift_Mailer;

class MandrillServiceProvider extends ServiceProvider
{
    /**
     * Indicates if loading of the provider is deferred.
     *
     * @var bool
     */
    protected $defer = true;

    /**
     * Register the service provider.
     *
     * @return void
     */
    public function register()
    {
        $this->registerSwiftMailer();

        $this->registerIlluminateMailer();
    }

    /**
     * Register the Illuminate mailer instance.
     *
     * @return void
     */
    protected function registerIlluminateMailer()
    {
        $this->app->singleton('mandrill', function ($app) {
            $config = $app->make('config')->get('mail');

            // Once we have create the mailer instance, we will set a container instance
            // on the mailer. This allows us to resolve mailer classes via containers
            // for maximum testability on said classes instead of passing Closures.
            $mailer = new Mailer(
                $app['view'], $app['swift.mandrill'], $app['events']
            );

            if ($app->bound('queue')) {
                $mailer->setQueue($app['queue']);
            }

            // Next we will set all of the global addresses on this mailer, which allows
            // for easy unification of all "from" addresses as well as easy debugging
            // of sent messages since they get be sent into a single email address.
            foreach (['from', 'reply_to', 'to'] as $type) {
                $this->setGlobalAddress($mailer, $config, $type);
            }

            return $mailer;
        });
    }

    /**
     * Set a global address on the mailer by type.
     *
     * @param  \Illuminate\Mail\Mailer  $mailer
     * @param  array  $config
     * @param  string  $type
     * @return void
     */
    protected function setGlobalAddress($mailer, array $config, $type)
    {
        $address = Arr::get($config, $type);

        if (is_array($address) && isset($address['address'])) {
            $mailer->{'always'.Str::studly($type)}($address['address'], $address['name']);
        }
    }

    /**
     * Register the Swift Mailer instance.
     *
     * @return void
     */
    public function registerSwiftMailer()
    {
        // Once we have the transporter registered, we will register the actual Swift
        // mailer instance, passing in the transport instances, which allows us to
        // override this transporter instances during app start-up if necessary.
        $this->app->singleton('swift.mandrill', function ($app) {
            return new Swift_Mailer($app['swift.transport']->driver('mandrill'));
        });
    }

    /**
     * Get the services provided by the provider.
     *
     * @return array
     */
    public function provides()
    {
        return [
            'mandrill', 'swift.mandrill'
        ];
    }
}