Send Mail (Amazon SimpleMail) with Attachement

mail.java

public static void sendMail(String subject, String message, byte[] attachement, String fileName, String contentType, String from, String[] to) {
    try {
        // JavaMail representation of the message
        Session s = Session.getInstance(new Properties(), null);
        MimeMessage mimeMessage = new MimeMessage(s);

        // Sender and recipient
        mimeMessage.setFrom(new InternetAddress(from));
        for (String toMail : to) {
            mimeMessage.addRecipient(javax.mail.Message.RecipientType.TO, new InternetAddress(toMail));
        }

        // Subject
        mimeMessage.setSubject(subject);

        // Add a MIME part to the message
        MimeMultipart mimeBodyPart = new MimeMultipart();
        BodyPart part = new MimeBodyPart();
        part.setContent(message, MediaType.TEXT_HTML);
        mimeBodyPart.addBodyPart(part);

        // Add a attachement to the message
        part = new MimeBodyPart();
        DataSource source = new ByteArrayDataSource(attachement, contentType);
        part.setDataHandler(new DataHandler(source));
        part.setFileName(fileName);
        mimeBodyPart.addBodyPart(part);

        mimeMessage.setContent(mimeBodyPart);

        // Create Raw message
        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
        mimeMessage.writeTo(outputStream);
        RawMessage rawMessage = new RawMessage(ByteBuffer.wrap(outputStream.toByteArray()));

        // Credentials
        String keyID = "";// <your key id>
        String secretKey = "";// <your secret key>
        AWSCredentials credentials = new BasicAWSCredentials(keyID, secretKey);
        AmazonSimpleEmailServiceClient client = new AmazonSimpleEmailServiceClient(credentials);

        // Send Mail
        SendRawEmailRequest rawEmailRequest = new SendRawEmailRequest(rawMessage);
        rawEmailRequest.setDestinations(Arrays.asList(to));
        rawEmailRequest.setSource(from);
        client.sendRawEmail(rawEmailRequest);

    } catch (IOException | MessagingException e) {
        // your Exception
        e.printStackTrace();
    }
}