Bogardo\Mailgun\Mail\Message::to PHP Method

    public function to($address, $name = "", array $variables = [])
    {
        if (is_array($address)) {
            foreach ($address as $email => $variables) {
                $this->variables[$email] = $variables;
                $name = isset($variables['name']) ? $variables['name'] : null;
                $this->messageBuilder->addToRecipient($email, ['full_name' => $name]);
            }
        } else {
            if (!empty($variables)) {
                $this->variables[$address] = $variables;
            }
            $this->messageBuilder->addToRecipient($address, ['full_name' => $name]);
        }
        return $this;
    }