<camel:camelContext xmlns="http://camel.apache.org/schema/spring">

    <camel:route id="gmailRoute">
        <camel:from uri="direct://gmail" />
        <camel:to
            uri="smtp://p****is@gmail.com?host=smtp.gmail.com&port=587&from=p****is@gmail.comi&password=gl******" />
    </camel:route>

log.info("Initializing Email Service");

    Properties props = new Properties();
    props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
    props.put("mail.smtp.auth", "true");
    props.put("mail.smtp.starttls.enable", "true");
    props.put("mail.smtp.host", "smtp.googlemail.com");
    props.put("mail.smtp.port", "587");
    Authenticator auth = null;
        props.put("mail.smtp.auth", "true");
        auth = new Authenticator() {
            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication("******akis@gmail.com", "gl*****s");
            }
        };
    Session t = Session.getInstance(props, auth);

    template = camelContext.createProducerTemplate();

@Override
public void sendEmail(String from, String[] to, String[] cc, String[] bcc, String subject, String body)
{
String endpoint = "direct://gmail";
    String toString = null;
    String ccString = null;
    String bccString = null;
    Map<String, Object> headers = null;

    toString = convertStringArrayToCSV(to);
    ccString = convertStringArrayToCSV(cc);
    bccString = convertStringArrayToCSV(bcc);

    headers = new HashMap<String, Object>();
    headers.put("Subject", subject);
    if (toString != null)
    {
        headers.put("To", toString);
    }

    if (ccString != null)
    {
        headers.put("CC", ccString);
    }

    if (bccString != null)
    {
        headers.put("BCC", bccString);
    }

    template.sendBodyAndHeaders(endpoint, body, headers);

}

<camel:camelContext xmlns="http://camel.apache.org/schema/spring">
  <camel:route id="gmailRoute">
    <camel:from uri="direct://gmail" />
    <camel:to uri="smtps://p****is@gmail.com?host=smtp.gmail.com&port=587&from=p****is@gmail.comi&password=gl******" />
  </camel:route>
</camel:camelContext>

smtp://smtp.gmail.com?port=587&username=USERNAME@gmail.com&password=PASSOWRD&mail.smtp.auth=true&mail.smtp.starttls.enable=true