Can't send email with laravel 5.1 + gmail

I'm having troubles sending e-mails via a Laravel 5.1 application using gmail.

Here is my config file :

 <?php
    return [
            'driver' => 'sendmail',
            'host' => 'smtp.gmail.com',
            'port' => 578,
            'from' => array('address' => 'adresse@gmail.com', 'name' => 'Something'),
            'encryption' => 'tls',
            'username' => 'someaddress@gmail.com',
            'password' => '****',
            'sendmail' => '/usr/sbin/sendmail -bs',
            'pretend' => false,

    ];

Allowing less secure apps to access your account is turned on.

What config shall I use ?

via Chebli Mohamed