define('SMTP_HOST', 'smtp.examplemailer.com');
define('SMTP_PORT', 587);
define('SMTP_USER', 'myuser');
define('SMTP_PASSWORD', 'mypassword');
define('SMTP_CRYPT', 'tls'); // encryption system (ssl or tls)
define('SMTP_FROM_EMAIL', 'hello@example.com');
define('SMTP_FROM_NAME', 'My Company');

// Send WordPress emails via SMTP
function forge_smtp_email($phpmailer){

  $phpmailer->isSMTP();
  $phpmailer->Host = SMTP_HOST;
  $phpmailer->SMTPAuth = true;
  $phpmailer->Port = SMTP_PORT;
  $phpmailer->Username = SMTP_USER;
  $phpmailer->Password = SMTP_PASSWORD;
  $phpmailer->SMTPSecure = SMTP_CRYPT;
  $phpmailer->From = SMTP_FROM_EMAIL;
  $phpmailer->FromName = SMTP_FROM_NAME;

}
add_action('phpmailer_init', 'forge_smtp_email');