javamail 通过163邮箱发送邮件

1.使用javamail的jar包
2.在163邮箱的设置中开启POP3/SMTP/IMAP

public static boolean sendMail(String to, String code) {  

        try {  
            Properties props = new Properties(); 
            props.put("username", "[e-mail]"); 
            props.put("password", "xxxxxx"); 
            props.put("mail.transport.protocol", "smtp" ); 
            props.put("mail.smtp.host", "smtp.163.com"); 
            props.put("mail.smtp.port", "25" ); 

            Session mailSession = Session.getDefaultInstance(props); 

            Message msg = new MimeMessage(mailSession); 
            msg.setFrom(new InternetAddress("[e-mail]")); 
            msg.addRecipients(Message.RecipientType.TO, InternetAddress.parse(to)); 
            msg.setSubject("激活邮件"); 
            msg.setContent("<h1>此邮件为官方激活邮件</h1>","text/html;charset=UTF-8");

            msg.saveChanges(); 

            Transport transport = mailSession.getTransport("smtp"); 
            transport.connect(props.getProperty("mail.smtp.host"), props  
.getProperty("username"), props.getProperty("password")); 
            transport.sendMessage(msg, msg.getAllRecipients()); 
            transport.close(); 
        } catch (Exception e) {  
            e.printStackTrace(); 
            System.out.println(e); 
            return false; 
        }  
        return true; 
    }   
    public static void main(String[] args) {
        sendMail("[e-mail]", "89");
    }