Email.php

<?php

namespace WPDesk\Library\WPEmail\Emails;

use WPDesk\Library\WPEmail\Abstracts\EmailGettersAbstract;

class Email extends EmailGettersAbstract {

    const ID = 'email';

    /**
     * Define unique email ID.
     *
     * @return string
     */
    public function get_id(): string {
        return self::ID;
    }

}