# Using Custom Adapter

There are certain use cases, where you do not want to send the e-mail from your app, but delegate the task to an external API.

It is really simple with Adapters system!

## Implement Your Adapter

Create your adapter class and add your custom logic for sending:

```php
namespace App\Mailer\Adapter;

use Sylius\Component\Mailer\Sender\Adapter\AbstractAdapter;
use Sylius\Component\Mailer\Model\EmailInterface;
use Sylius\Component\Mailer\Renderer\RenderedEmail;

class CustomAdapter extends AbstractAdapter
{
    public function send(array $recipients, $senderAddress, $senderName, RenderedEmail $renderedEmail, EmailInterface $email, array $data)
    {
        // Your custom logic.
    }
}
```
## Register And Configure New Adapter In Container

In your ``config/packages/sylius_mailer.yaml`` file, add your adapter definition and configure the mailer to use it.

```yaml
services:
    app.email_sender.adapter.custom:
        parent: sylius.email_sender.adapter.abstract
        class: App\Mailer\Adapter\CustomAdapter

sylius_mailer:
    sender_adapter: app.email_sender.adapter.custom
```
That's it! Your new adapter will be used to send out e-mails. You can do whatever you want there!

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