How can I dinamically pass the recipient e-mail address into the Mail::send() inner callback function?

I am pretty new in PHP and moreoer in Laravel and I am finding some difficult trying to send an e-mail to a not predefine user.

So I am using the Illuminate\Support\Facades\Mail class.

If I do something like this it works fine:

$registrationMail = [
    'title' => 'Registrazione albergatore su portale BeTrivius',
    'url' => URL::to('/').'/activate?email='.$data['email'].'&token='.$token,
    'email' => $data['email'],
    'name' => $data['name'],
    'surname' => $data['surname']
];

Mail::send('emails.registrationMail', $registrationMail, function($message) {
    $message->to('mail@gmail.com', 'recipient-name')->subject('email subject');
});

So I am calling the send() method of the Mail class passing to it:

• The view representing the e-mail template.
• An array containing some data used into the previous view.
• A callback function in which is contained the logic to set the recipient e-mail address and the e-mail subject

It works fine but doning in this way the email recipient is static and the e-mail will be send always to the same e-mail address.

This is not good for me because I have to send this e-mail to the address contained into the $registrationMail['email'] property.

But doing in this way:

Mail::send('emails.registrationMail', $registrationMail, function($message) {

    $message->to($registrationMail['email'], $data['name'].' '.$data['surname'])->subject('titolo');
});

the $registrationMail seems to be not visible into the callback function (it says to me Undefined variable). Why I can't see an external property from the inside of a callback function?

So I can't retrieve this information in this way.

So I tryied to add the $registrationMail variable as a parameter of this callback function, in this way:

Mail::send('emails.registrationMail', $registrationMail, function($message, $registrationMail) {

    $message->to($registrationMail['email'], $registrationMail['name'].' '.$registrationMail['surname'])->subject('titolo');
});

Doing in this way the $registrationMail variable is not undefined but when it try to send the e-mail I obtain this error message:

ErrorException in RegistrationController.php line 90:
Missing argument 2 for App\Http\Controllers\RegistrationController::App\Http\Controllers\{closure}()
in RegistrationController.php line 90
at HandleExceptions->handleError(2, 'Missing argument 2 for App\\Http\\Controllers\\RegistrationController::App\\Http\\Controllers\\{closure}()', 'C:\\xampp\\htdocs\\HotelRegistration\\app\\Http\\Controllers\\RegistrationController.php', 90, array('message' => object(Message))) in RegistrationController.php line 90
at RegistrationController->App\Http\Controllers\{closure}(object(Message))
at call_user_func(object(Closure), object(Message)) in Mailer.php line 199
at Mailer->send('emails.registrationMail', array('title' => 'Registrazione albergatore su portale BeTrivius', 'url' => 'http://ift.tt/2lWGs0f', 'email' => 'nobili.andrea@gmail.com', 'name' => 'Andrea', 'surname' => 'Nobili'), object(Closure)) in Facade.php line 221
at Facade::__callStatic('send', array('emails.registrationMail', array('title' => 'Registrazione albergatore su portale BeTrivius', 'url' => 'http://ift.tt/2lWGs0f', 'email' => 'nobili.andrea@gmail.com', 'name' => 'Andrea', 'surname' => 'Nobili'), object(Closure))) in RegistrationController.php line 93
at Mail::send('emails.registrationMail', array('title' => 'Registrazione albergatore su portale BeTrivius', 'url' => 'http://ift.tt/2lWGs0f', 'email' => 'nobili.andrea@gmail.com', 'name' => 'Andrea', 'surname' => 'Nobili'), object(Closure)) in RegistrationController.php line 93
at RegistrationController->store(object(Request))
at call_user_func_array(array(object(RegistrationController), 'store'), array(object(Request))) in Controller.php line 55
at Controller->callAction('store', array(object(Request))) in ControllerDispatcher.php line 44

where line 90 is:

Mail::send('emails.registrationMail', $registrationMail, function($message, $registrationMail) {

So the problem seems to be that I can't pass a second parameter to the inner callback function. Why?

How can I correctly pass the recipient e-mail address into this inner callback function? What is the smartest way to do it?

via blablabla blablabla