WP_Mail-basic-to-cc-bcc.php

<?php

$email = (new WP_Mail)
    ->to([
      'john.doe@gmail.com',
      'john.doe@me.com',
    ])
    ->cc('john.doe@yahoo.com')
    ->bcc([
      'john.doe@github.com',
      'john.doe@medium.com',
    ])
    ->template(get_template_directory() .'/emails/demo.html', [
        'name' => 'John Doe',
        'location' => 'London',
        'link' => 'http://github.com/anthonybudd/WP_Mail'
    ])
    ->send();