public void sendMail(Mail m) throws MessagingException {
try {
Message msg = new MimeMessage(_session);
msg.setFrom(new InternetAddress(m.getFrom()));
msg.addRecipients(Message.RecipientType.TO, buildAddresses(m.getTo()));
msg.addRecipients(Message.RecipientType.CC, buildAddresses(m.getCc()));
msg.addRecipients(Message.RecipientType.BCC, buildAddresses(m.getBcc()));
msg.setSubject(m.getSubject());
msg.setSentDate(new Date());
Multipart multipart = new MimeMultipart();