I want to send an email with CakeEmail to multiple addresses (email address of the people who sign up in my website).
Here is my code I use :
public function send($d){
    $this->set($d);
    if($this->validates()){
        App::uses('CakeEmail','Network/Email');
        $users = $this->User->find('all');
        $this->set($tests);
        foreach($users as $user)
        {
            $tests .= '"'.$user['User']['email'].'",';
        }
        $mail = new CakeEmail();
        $mail
            ->to(array($tests)) 
            ->from(array('test2@test.fr' => 'Hello'))
            ->subject('ALERTE')
            ->emailFormat('html')
            ->template('ouverture')->viewVars($d);
            return $mail->send();
        }
    else{
        return false;
    }
    }
And here's my error :
Invalid email : ""test@test.com","test@test.fr","