You can configure Mail by just adding/changing these lines in the app's .ENV file with your email provider login details, for example for using it with gmail you can use:

MAIL_DRIVER=smtp
MAIL_HOST=smtp.gmail.com
MAIL_PORT=587
[email protected]
MAIL_PASSWORD=yourPassword
MAIL_ENCRYPTION=tls

Then you can start sending emails using Mail, for example:

$variable = 'Hello world!'; // A variable which can be use inside email blade template.
Mail::send('your.blade.file', ['variable' => $variable], function ($message) {
            $message->from('[email protected]');
            $message->sender('[email protected]');
            $message->to([email protected]);
            $message->subject('Hello World');
        });