gistfile1.txt

use Illuminate\Support\Facades\Mail;
use Swift_SmtpTransport;

function sendEmailWithCustomSMTP($to, $emailClass, $smtpConfig)
{
    // Create the transport
    $transport = new Swift_SmtpTransport($smtpConfig['host'], $smtpConfig['port']);
    $transport->setUsername($smtpConfig['username']);
    $transport->setPassword($smtpConfig['password']);
    $transport->setEncryption($smtpConfig['encryption']);

    // Create the Mailer using your created Transport
    $mailer = new \Swift_Mailer($transport);

    // Set Laravel's Mailer
    Mail::setSwiftMailer($mailer);

    // Now send the email
    Mail::to($to)->send(new $emailClass());

    // Optionally, reset to the default mailer after sending
    // Mail::resetSwiftMailer();
}

// Usage
$smtpConfig = [
    'host' => 'smtp.example.com',
    'port' => 587,
    'encryption' => 'tls',
    'username' => 'username@example.com',
    'password' => 'secret',
];

sendEmailWithCustomSMTP('recipient@example.com', \App\Mail\MyCustomMail::class, $smtpConfig);