If you want to test if email configs are working correctly, you can try sending email using tinker.
First you need to go to tinker
php artisan tinker
Next paste in the following replacing the from and to email address. If there is any config error, you will see it on tinker or you will receive the email at to address provided.
\Mail::raw('Test email body', function($m) { $m->to('me@example.com'); $m->from('me@example.com'); $m->subject('Test email subject'); });