Change service config parameters at runtime

I'm using mailgun to send mails thought Laravel 5.2. It configured on config/services.php like that:

    'mailgun' => [
        'domain' => env('mailgun_domain','mydomain.com'),
        'secret' => env('mailgin_secret','my-secret-key-132152345423')
    ],

But, I need change that settings in run time, before call Mail::send, to use the correct service parameters. It must be changed many times during runtime.

I cannot configure it by .env file, because all data will be get from database, where the user setups the domain and secret.

You can set config values dynamically at runtime with config() helper:

config(['services.mailgun' => $arrayWithNewSettings]);