Laravel sendet keine E-Mails und gibt keine Fehler aus

Ich bin jetzt schon seit vier Monaten in einem Projekt und bin wirklich sauer, was mit Laravel zu tun hat. Es werden keine E-Mails gesendet. Ich habe es eingerichtet, um den Mail-Treiber zu verwenden und den richtigen Code einzugeben, aber es scheint überhaupt nicht zu funktionieren. Abgesehen davon, dass es nicht funktioniert, gibt es nicht einmal einen Fehler!

Hier ist meine Konfiguration:

return array(

/*
|--------------------------------------------------------------------------
| Mail Driver
|--------------------------------------------------------------------------
|
| Laravel supports both SMTP and PHP's "mail" function as drivers for the
| sending of e-mail. You may specify which one you're using throughout
| your application here. By default, Laravel is setup for SMTP mail.
|
| Supported: "smtp", "mail", "sendmail"
|
*/

'driver' => 'mail',

/*
|--------------------------------------------------------------------------
| SMTP Host Address
|--------------------------------------------------------------------------
|
| Here you may provide the Host address of the SMTP server used by your
| applications. A default option is provided that is compatible with
| the Postmark mail service, which will provide reliable delivery.
|
*/

'Host' => 'smtp.mailgun.org',

/*
|--------------------------------------------------------------------------
| SMTP Host Port
|--------------------------------------------------------------------------
|
| This is the SMTP port used by your application to delivery e-mails to
| users of your application. Like the Host we have set this value to
| stay compatible with the Postmark e-mail application by default.
|
*/

'port' => 587,

/*
|--------------------------------------------------------------------------
| Global "From" Address
|--------------------------------------------------------------------------
|
| You may wish for all e-mails sent by your application to be sent from
| the same address. Here, you may specify a name and address that is
| used globally for all e-mails that are sent by your application.
|
*/

'from' => array('address' => null, 'name' => null),

/*
|--------------------------------------------------------------------------
| E-Mail Encryption Protocol
|--------------------------------------------------------------------------
|
| Here you may specify the encryption protocol that should be used when
| the application send e-mail messages. A sensible default using the
| transport layer security protocol should provide great security.
|
*/

'encryption' => 'tls',

/*
|--------------------------------------------------------------------------
| SMTP Server Username
|--------------------------------------------------------------------------
|
| If your SMTP server requires a username for authentication, you should
| set it here. This will get used to authenticate with your server on
| connection. You may also set the "password" value below this one.
|
*/

'username' => null,

/*
|--------------------------------------------------------------------------
| SMTP Server Password
|--------------------------------------------------------------------------
|
| Here you may set the password required by your SMTP server to send out
| messages from your application. This will be given to the server on
| connection so that the application will be able to send messages.
|
*/

'password' => null,

/*
|--------------------------------------------------------------------------
| Sendmail System Path
|--------------------------------------------------------------------------
|
| When using the "sendmail" driver to send e-mails, we will need to know
| the path to where Sendmail lives on this server. A default path has
| been provided here, which will work well on most of your systems.
|
*/

'sendmail' => '/usr/sbin/sendmail -bs',

/*
|--------------------------------------------------------------------------
| Mail "Pretend"
|--------------------------------------------------------------------------
|
| When this option is enabled, e-mail will not actually be sent over the
| web and will instead be written to your application's logs files so
| you may inspect the message. This is great for local development.
|
*/

'pretend' => false,

);

Hier ist mein PHP Code zum Versenden von E-Mails:

$data["mail_message"] = "Hello!";

    Mail::send('emails.welcome', $data, function($message)
    {
        $message
            ->to('[email protected]')
            ->from('[email protected]')
            ->subject('TEST');
    });