<p>已使用 163 邮箱测试通过，且支持 SSL 连接。</p>    <p><strong>发送邮件</strong></p>    <p>示例：Jack 发送一封邮件给 Rose。</p>    <pre>  <code>public class SendMail {        public static void main(String[] args) {          boolean isSSL = true;          String host = "smtp.163.com";          int port = 465;          String from = "jack@163.com";          String to = "rose@163.com";          boolean isAuth = true;          final String username = "jack@163.com";          final String password = "jack";            Properties props = new Properties();          props.put("mail.smtp.ssl.enable", isSSL);          props.put("mail.smtp.host", host);          props.put("mail.smtp.port", port);          props.put("mail.smtp.auth", isAuth);            Session session = Session.getDefaultInstance(props, new Authenticator() {              @Override              protected PasswordAuthentication getPasswordAuthentication() {                  return new PasswordAuthentication(username, password);              }          });            try {              Message message = new MimeMessage(session);                message.setFrom(new InternetAddress(from));              message.addRecipient(Message.RecipientType.TO, new InternetAddress(to));              message.setSubject("主题");              message.setText("内容");                Transport.send(message);          } catch (AddressException e) {              e.printStackTrace();          } catch (MessagingException e) {              e.printStackTrace();          }            System.out.println("发送完毕！");      }  }</code></pre>    <p><strong>收取邮件</strong></p>    <p>示例：Rose 收取最近一封邮件。</p>    <pre>  <code>import java.util.Date;  import java.util.Properties;  import javax.mail.Folder;  import javax.mail.Message;  import javax.mail.MessagingException;  import javax.mail.NoSuchProviderException;  import javax.mail.Session;  import javax.mail.Store;    public class FetchMail {        public static void main(String[] args) {          String protocol = "pop3";          boolean isSSL = true;          String host = "pop.163.com";          int port = 995;          String username = "rose@163.com";          String password = "rose";            Properties props = new Properties();          props.put("mail.pop3.ssl.enable", isSSL);          props.put("mail.pop3.host", host);          props.put("mail.pop3.port", port);            Session session = Session.getDefaultInstance(props);            Store store = null;          Folder folder = null;          try {              store = session.getStore(protocol);              store.connect(username, password);                folder = store.getFolder("INBOX");              folder.open(Folder.READ_ONLY);                int size = folder.getMessageCount();              Message message = folder.getMessage(size);                String from = message.getFrom()[0].toString();              String subject = message.getSubject();              Date date = message.getSentDate();                System.out.println("From: " + from);              System.out.println("Subject: " + subject);              System.out.println("Date: " + date);          } catch (NoSuchProviderException e) {              e.printStackTrace();          } catch (MessagingException e) {              e.printStackTrace();          } finally {              try {                  if (folder != null) {                      folder.close(false);                  }                  if (store != null) {                      store.close();                  }              } catch (MessagingException e) {                  e.printStackTrace();              }          }            System.out.println("接收完毕！");      }  }</code></pre>    <p><strong>常用邮件协议</strong></p>    <p>发送邮件：SMTP</p>    <p>收取邮件：POP3、IMAP</p>    <p><strong>常用邮件配置项</strong></p>    <table border="1" cellpadding="2" cellspacing="0">     <tbody>      <tr>       <td>配置项</td>       <td>说明</td>      </tr>      <tr>       <td>mail.xxx.ssl.enable</td>       <td>是否支持 SSL 连接</td>      </tr>      <tr>       <td>mail.xxx.host</td>       <td>邮件服务器主机名</td>      </tr>      <tr>       <td>mail.xxx.port</td>       <td>邮件服务器端口号</td>      </tr>      <tr>       <td>mail.xxx.auth</td>       <td>是否进行身份认证</td>      </tr>     </tbody>    </table>    <p><br> 说明：xxx 表示协议名称，例如：smtp、pop3 等。</p>    <p><strong>默认端口号</strong></p>    <table border="1" cellpadding="2" cellspacing="0">     <tbody>      <tr>       <td> </td>       <td>SMTP</td>       <td>POP3</td>       <td>IMAP</td>      </tr>      <tr>       <td>普通方式</td>       <td>25</td>       <td>110</td>       <td>143</td>      </tr>      <tr>       <td>SSL 方式</td>       <td>465</td>       <td>995</td>       <td>993</td>      </tr>     </tbody>    </table>    <p>使用 Apache Commons Email 发送邮件</p>    <p> </p>    <pre>  <code>import org.apache.commons.mail.Email;  import org.apache.commons.mail.EmailException;  import org.apache.commons.mail.SimpleEmail;    public class SendMail {        public static void main(String[] args) {          boolean isSSL = true;          String host = "smtp.163.com";          int port = 465;          String from = "jack@163.com";          String to = "rose@163.com";          String username = "jack@163.com";          String password = "jack";            try {              Email email = new SimpleEmail();              email.setSSLOnConnect(isSSL);              email.setHostName(host);              email.setSmtpPort(port);              email.setAuthentication(username, password);              email.setFrom(from);              email.addTo(to);              email.setSubject("主题");              email.setMsg("内容");              email.send();          } catch (EmailException e) {              e.printStackTrace();          }            System.out.println("发送完毕！");      }  }</code></pre>    <p>参考：<a href="/misc/goto?guid=4959614896907685474" rel="nofollow">http://commons.apache.org/proper/commons-email/userguide.html</a></p>    <p>via http://my.oschina.net/huangyong/blog/178641</p>