javamail

final SendMail sendmail = new SendMail();
sendmail.setHost("mail.bjaction.com");
sendmail.setUsername("[e-mail]");
sendmail.setPassword("******");
sendmail.setFrom("name");//发送者

sendmail.setTo("接收者邮箱");//接收者
sendmail.setSubject("标题");
sendmail.setContent("内容");

Properties props = System.getProperties();
props.put("mail.smtp.host", sendmail.getHost());
props.put("mail.smtp.auth", "true");
Session session = Session.getDefaultInstance(props,
new Authenticator() {
public PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(sendmail.getUsername(), sendmail.getPassword());
}
});
try {
MimeMessage msg = new MimeMessage(session);
msg.setFrom(new InternetAddress(sendmail.getFrom()));
InternetAddress[] address = { new InternetAddress(sendmail.getTo()) };
msg.setRecipients(Message.RecipientType.TO, address);
msg.setSubject(sendmail.getSubject());
Multipart mp = new MimeMultipart();
MimeBodyPart mbpContent = new MimeBodyPart();
mbpContent.setText(sendmail.getContent());
mp.addBodyPart(mbpContent);
msg.setContent(mp);
msg.setSentDate(new Date());
Transport.send(msg);

} catch (MessagingException mex) {
mex.printStackTrace();
Exception ex = null;
if ((ex = mex.getNextException()) != null) {
ex.printStackTrace();
}
System.out.println("邮件发送失败!");
}
System.out.println("邮件发送成功!");