Sending email using smtp doesn't work

I have also tried sendgrid without success:

PHP Code:

$config['protocol']         = 'smtp';
        $config['smtpHost']        = 'smtp.sendgrid.net';
        $config['smtpPort']        = 587;
        $config['smtpUser']        = 'apikey';
        $config['smtpPass']        = 'my_key';
        $config['charset']          = 'utf-8';
        $config['mailType']         = 'html';
        $config['SMTPCrypto'] = 'tls'; // tls or ssl

       

        $email = \Config\Services::email();
        $email->initialize($config); // Use the config above

        $email->setFrom('[email protected]', 'xxx');
        $email->setTo('[email protected]');
        $email->setSubject('Email Test');
        $email->setMessage('Testing the email class.');
        $email->send();