code: @SuppressWarnings("deprecation")
  	public static MailerRegularBuilderImpl withSMTPServer(@Nullable final String host, @Nullable final Integer port, @Nullable final String username, @Nullable final String password) {
  		return new MailerRegularBuilderImpl().withSMTPServer(host, port, username, password);
  	}
docs: Delegates to {@link MailerRegularBuilder#withSMTPServer(String, Integer, String, String)}.