1. flat PHP.php

<?php

Route::get('/hello-mail/{name}', function ($name) {
    Mail::send('emails.hello', array('name' => $name), function ($message) {
        $message->to('foo@example.com', 'Foo')->subject('Someone visited /hello-mail/');
    });
});

2. OO PHP.php

<?php

Route::get('/hello-mail/{name}', 'MailController@sendHello');

class MailController extends BaseController
{
    private $mailer;

    // $mailer get automatically resolved by the IoC container
    public function __construct(\Illuminate\Mail\Mailer $mailer)
    {
        $this->mailer = $mailer;
    }

    public function sendHello($name)
    {
        $this->mailer->send('emails.hello', array('name' => $name), function ($message) {
            $message->to('foo@example.com', 'Foo')->subject('Someone visited /hello-mail/');
        });
    }
}